Haven't really had any requests for this before, to be honest - best bet at the moment would simply be to enter both of them in the search box; if you can't see them clearly at the default size you can increase it in settings.
You have to enter the two characters, not the Pinyin. (sorry, I assumed that was what you were doing anyway) If you enter two characters that don't make up a single word, it'll show you an entry for each of them separately.
True, I forgot that!Too many options - how would we know which wu3 and which niu2 you want?
Thanks, it's a good way to enter character.But if you install a free Pinyin IME on your phone (lots of them to choose from) you can enter individual characters using Pinyin that way.