First, don't search for answers or walkthroughs
Besides there's aren't any! Play fairly!
Always the answers will be lowercase, the answer will always be a word not gibberish
The levels that have a search bars will require some research or view a web
There's will have some levels that will use US/PW, I mean
2 words one for the username another for the password
US/PW's will have not any spaces or capital letters.
Do not give up!
Good Luck :)