Search doesn't search well

I found it in the forum, but not for the v1.5.1.3. How can I make the default search box at the top, to search through the product description and model? I've tried every single thing I found in the forum, without any success. So, anyone achieved that on v1.5.1.3?

Thanks in advance.

I know it's not a bug, and the search is designed to search like that, but here is the problem:

If there are products, for example, like those:

Apple MacBook Pro
Apple Cinema
Apple Air

and if I do a search for: apple book

the search result will show all three products. So, how can I make it to show only the products that contain the words apple and book so in this case only Apple MacBook Pro will be shown as a search result.

topics merged as they are both on the same subject