How can i search all the item in a list by text?

Lets say that i have a list with a lot of items and a search_box.

Im writing a word in the search_box and i want to search all the items in the list to see if there is a maτch.

Also its possible to search a part of a word instead of a perfect match?

I have a word "construct" , its possible to search for "cons" and give me a match with "construct"?

Yes, you can do this:

Sorry i did not get it.

Lets change to , how to compare the first 3 letters of 2 textboxes?