I recently updated my store to version 1.5.6.1. Prior to that I had attached vqmod installed in order to better function opencart search. It Improves search results by using AND condition instead of OR. It also searches inside description or the product.
However since the upgrade, this is no longer seems to be working. Any help in getting this vqmod functioning with ver 1.5.6.1 would be highly appreciated. My coding knowledge is not that good, please help if you can

Thank you.