How do I find an item quickly while billing?

In the item box, type a few letters of any words of the name, in any order: "black pipe" finds PIPE BLACK, "rope 12" finds ROPE 12MM. Hindi words work too (rassi, balti). This customer's usual items come first, then what sold lately. With the box empty, it shows what this customer usually buys. When the list is long, click a size button under it (12MM, 16MM) to narrow it. Use ↓ ↑ and Enter to pick. If you pick an item for a word, it comes first for that word next time, on every counter.