You need not (but can) use diacritics or letters containing diacritics, like ç é ñ ø etc.
Use quotation marks if searching for a phrase or a proper name of more than one word.
If the search takes you to a page where you have trouble in finding what you searched for, use Ctrl+F for search on that specific page.
When searching on a page you normally need to use diacritics or letters containing diacritics.
Do not use quotation marks on page searches.
Combined search engine for the following websites: