Add as many (relevant) terms to your query as you like, Sando can handle it!
Use the '-' filter and the filetype filter to further refine your results.
Use the autocompletions, as they provide insight into what terms are used in code.
Want to do a literal search in Sando? Put some quotes on it! Like this "Dungeon.Levels["
open file -test
Searches for elements with the terms 'open' and 'file' that do not include the term 'test'.
search string filetype:cs
Searches for elements with the terms 'search' and 'string' in files ending with '.cs'.
Searches for the exact phrase within quotes, can include nested quotes.