Safari web browser do not find strings on a page in the common way How to switch Safari to a normal web page searching instead of finding only whole words?

Ex: there ase some words on a page: hello_world, ask_different. When I search for hello, world, ask, different - i search perfectly. But when I'm trying to search ello, ifferent, etc. - it gives me nothing.
The find banner was set to match the starts of words by default in Safari 5.1:



This makes it default to Contains:

defaults write com.apple.Safari FindOnPageMatchesWordStartsOnly -bool false


You have to quit and reopen Safari to apply the changes.