When trying to find a theme from Appearance / Themes / Instal themes there's a search box. Entering a search term then produces a dropdown select box with three choices: keyword, author and tag.
I don't know why, but 'Keyword' doesn't seem to include the theme name, and 'Author' isn't the real name of the author, but the user name on the WP forums.
Suggestion: theme names should be included in the database of keywords, and there should be 'author nickname' and 'author real name' dropdowns.
Thanks!