@[deleted]At the moment you cannot search for keywords that are spread throughout the title. You can only search for one keyword or a continuous phrase. For example, if your title is "I placed multiple orders, can you combine my orders and refund my shipping?" then searching for "orders" or "combine my orders" will work but searching for "combine orders" will not (because they are separated, not continuous). You can always modify the code yourself to accomplish deeper searching but please note that those changes will be overwritten once you upgrade and you'll have to do it all over again.
I hope this helps. Cheers.