diff --git a/lib/msoffice.js b/lib/msoffice.js
index c5a096d..ca61fde 100644
--- a/lib/msoffice.js
+++ b/lib/msoffice.js
@@ -528,12 +528,12 @@ Outlook.Search.filters._escape = function (s) {
 
 Outlook.Search.filters.subjectContains = function (keyword) {
     var k = Outlook.Search.filters._escape(keyword);
-    return "([Subject] LIKE '%" + k + "%')";
+    return "([Subject] Like '*" + k + "*')";
 };
 
 Outlook.Search.filters.senderContains = function (keyword) {
     var k = Outlook.Search.filters._escape(keyword);
-    return "([SenderEmailAddress] LIKE '%" + k + "%') OR ([SenderName] LIKE '%" + k + "%')";
+    return "([SenderEmailAddress] Like '*" + k + "*') OR ([SenderName] Like '*" + k + "*')";
 };
 
 Outlook.Search.filters.senderEmailEquals = function (email) {
@@ -543,14 +543,14 @@ Outlook.Search.filters.senderEmailEquals = function (email) {
 
 Outlook.Search.filters.recipientContains = function (keyword) {
     var k = Outlook.Search.filters._escape(keyword);
-    return "([To] LIKE '%" + k + "%') OR ([CC] LIKE '%" + k + "%') OR ([BCC] LIKE '%" + k + "%')";
+    return "([To] Like '*" + k + "*') OR ([CC] Like '*" + k + "*') OR ([BCC] Like '*" + k + "*')";
 };
 
 Outlook.Search.filters.senderOrToCcBccContains = function (keyword) {
     var k = Outlook.Search.filters._escape(keyword);
     return "(" +
-        "([SenderEmailAddress] LIKE '%" + k + "%') OR ([SenderName] LIKE '%" + k + "%')" +
-        " OR ([To] LIKE '%" + k + "%') OR ([CC] LIKE '%" + k + "%') OR ([BCC] LIKE '%" + k + "%')" +
+        "([SenderEmailAddress] Like '*" + k + "*') OR ([SenderName] Like '*" + k + "*')" +
+        " OR ([To] Like '*" + k + "*') OR ([CC] Like '*" + k + "*') OR ([BCC] Like '*" + k + "*')" +
         ")";
 };