Comment 74 for bug 663776

"Only when we are satisfied we submit the whole string with either Enter
or Space, depending on the input method"
@Arne, that's the problem I think.
Unity must show and search the letter(string) even it's not complete.

Did you tried Google using Instant Search(default setting)?
Google Instant Search show and search with whole incomplete string even you didn't enter, space, type next character and so on.
As you see attached image from Koichi, there's 4 letters but not completed.
Google start to search it using 4 letters, but Unity didn't try to search it.

Yes, I know CJK users "can" search with CJK letters and input method.
But it's really annoying to press lots of keys for find 2 letters or press enter several times.
Also, it's too unfamiliar to people who use Unity first.
Because Windows and Mac doesn't have this problem it can even make Ubuntu's first impression bad!

Please consider this bug one more time.