diff --git a/init.lua b/init.lua
index 6994639..c6c23da 100644
--- a/init.lua
+++ b/init.lua
@@ -127,13 +127,13 @@ local collect_items = function(filter, lang_code)
 				-- First, try to match original description
 				if desc ~= "" then
 					local ldesc = string.lower(desc)
-					matches = string.match(ldesc, filter) ~= nil
+					matches = string.find(ldesc, filter, 1, true) ~= nil
 					-- Second, try to match translated description
 					if not matches then
 						local tdesc = minetest.get_translated_string(lang_code, desc)
 						if tdesc ~= "" then
 							tdesc = string.lower(tdesc)
-							matches = string.match(tdesc, filter) ~= nil
+							matches = string.find(tdesc, filter, 1, true) ~= nil
 						end
 					end
 					-- Third, try to match translated short description
@@ -142,14 +142,14 @@ local collect_items = function(filter, lang_code)
 						if sdesc ~= "" then
 							sdesc = minetest.get_translated_string(lang_code, sdesc)
 							sdesc = string.lower(sdesc)
-							matches = string.match(sdesc, filter) ~= nil
+							matches = string.find(sdesc, filter, 1, true) ~= nil
 						end
 					end
 
 				end
 				-- Fourth, try to match itemstring
 				if not matches then
-					matches = string.match(itemstring, filter) ~= nil
+					matches = string.find(itemstring, filter, 1, true) ~= nil
 				end
 
 				-- If item was matched, add to item list