diff --git a/Kiwix-iOS/Controller/MainVCDelegates.swift b/Kiwix-iOS/Controller/MainVCDelegates.swift
index e581e256..b680abe1 100644
--- a/Kiwix-iOS/Controller/MainVCDelegates.swift
+++ b/Kiwix-iOS/Controller/MainVCDelegates.swift
@@ -54,7 +54,7 @@ extension MainVC: LPTBarButtonItemDelegate, TableOfContentsDelegate, UISearchBar
     }
 
     func searchBar(searchBar: UISearchBar, textDidChange searchText: String) {
-        searchController?.searchText = searchText
+        searchController?.startSearch(searchText, delayed: true)
     }
     
     func searchBarSearchButtonClicked(searchBar: UISearchBar) {
diff --git a/Kiwix-iOS/Controller/Search/RecentSearchCVC.swift b/Kiwix-iOS/Controller/Search/RecentSearchCVC.swift
index 01203862..faeadb27 100644
--- a/Kiwix-iOS/Controller/Search/RecentSearchCVC.swift
+++ b/Kiwix-iOS/Controller/Search/RecentSearchCVC.swift
@@ -59,11 +59,11 @@ class RecentSearchCVC: UIViewController, UICollectionViewDataSource, UICollectio
     
     func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
         guard let mainVC = parentViewController?.parentViewController?.parentViewController as? MainVC,
-            let SearchController = parentViewController?.parentViewController as? SearchController,
+            let searchController = parentViewController?.parentViewController as? SearchController,
             let cell = collectionView.cellForItemAtIndexPath(indexPath) as? LocalLangCell,
             let text = cell.label.text else {return}
         mainVC.searchBar.text = text
-        SearchController.searchText = text
+        searchController.startSearch(text, delayed: false)
         collectionView.deselectItemAtIndexPath(indexPath, animated: true)
     }
     
diff --git a/Kiwix-iOS/Controller/SearchController.swift b/Kiwix-iOS/Controller/SearchController.swift
index 5dc35569..9fa49b39 100644
--- a/Kiwix-iOS/Controller/SearchController.swift
+++ b/Kiwix-iOS/Controller/SearchController.swift
@@ -15,10 +15,9 @@ class SearchController: UIViewController, UISearchBarDelegate, UIGestureRecogniz
     @IBOutlet var tapGestureRecognizer: UITapGestureRecognizer!
     var searchResultTBVC: SearchResultTBVC?
     
-    var searchText = "" {
+    private var searchText = "" {
         didSet {
             configureViewVisibility()
-            searchResultTBVC?.startSearch(searchText)
         }
     }
     
@@ -57,6 +56,22 @@ class SearchController: UIViewController, UISearchBarDelegate, UIGestureRecogniz
         }
     }
     
+    // MARK: - Search
+    
+    func startSearch(searchText: String, delayed: Bool) {
+        self.searchText = searchText
+        if delayed {
+            let previousSearchText = searchText
+            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(275 * USEC_PER_SEC)), dispatch_get_main_queue()) {
+                print("\(previousSearchText), \(self.searchText)")
+                guard previousSearchText == self.searchText else {return}
+                self.searchResultTBVC?.startSearch(self.searchText)
+            }
+        } else {
+            searchResultTBVC?.startSearch(self.searchText)
+        }
+    }
+    
     // MARK: - Handle Gesture
     
     func handleTap(tapGestureRecognizer: UIGestureRecognizer) {
diff --git a/Kiwix-iOS/Info.plist b/Kiwix-iOS/Info.plist
index 690f9866..39ff4165 100644
--- a/Kiwix-iOS/Info.plist
+++ b/Kiwix-iOS/Info.plist
@@ -36,7 +36,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>1388</string>
+	<string>1416</string>
 	<key>ITSAppUsesNonExemptEncryption</key>
 	<false/>
 	<key>LSRequiresIPhoneOS</key>
diff --git a/Kiwix/SearchOperation.swift b/Kiwix/SearchOperation.swift
index beb09ea8..1408b7fa 100644
--- a/Kiwix/SearchOperation.swift
+++ b/Kiwix/SearchOperation.swift
@@ -38,6 +38,7 @@ class SearchOperation: GroupOperation {
     }
     
     override func finished(errors: [NSError]) {
+        print(cancelled)
         NSOperationQueue.mainQueue().addOperationWithBlock { 
             self.completionHandler(self.results)
         }
diff --git a/Kiwix/ZimMultiReader.swift b/Kiwix/ZimMultiReader.swift
index ac030eed..0c6862a5 100644
--- a/Kiwix/ZimMultiReader.swift
+++ b/Kiwix/ZimMultiReader.swift
@@ -168,7 +168,13 @@ class SearchResult: CustomStringConvertible {
     
     let probability: Double? // range: 0.0 - 1.0
     let distance: Int // Levenshtein distance, non negative integer
-    let score: Double
+    private(set)  lazy var score: Double = {
+        if let probability = self.probability {
+            return WeightFactor.calculate(probability) * Double(self.distance)
+        } else {
+            return Double(self.distance)
+        }
+    }()
     
     init?(rawResult: [String: AnyObject]) {
         let title = (rawResult["title"] as? String) ?? ""
@@ -184,7 +190,6 @@ class SearchResult: CustomStringConvertible {
                 return nil
             }
         }()
-        let score = WeightFactor.calculate(probability ?? 1) * Double(distance)
         
         self.title = title
         self.path = path
@@ -192,7 +197,6 @@ class SearchResult: CustomStringConvertible {
         self.snippet = snippet
         self.probability = probability
         self.distance = distance
-        self.score = score
         
         if title == "" || path == "" || bookID == "" {return nil}
     }