Now forget for search from the beginning of the word !

This features will be available for the following fields:

Catalog -> Categories -> Add New or Edit -> Data : Parent

Catalog -> Categories -> Add New or Edit -> Data : Filters

Catalog -> Products : Product Name (To Filter)

Catalog -> Products : Model (To Filter)

Products -> Add New or Edit -> Links : Manufacturer

Products -> Add New or Edit -> Links : Categories

Catalog -> Products -> Add New or Edit -> Links : Filters

Catalog -> Products -> Add New or Edit -> Links : Downloads

[*] Catalog -> Products -> Add New or Edit -> Links : Related Products

LIVE DEMO (opencart 2.x)
username: demo
password: demo