If your keywords are in common for several languages you can type at the end of your query (in the case of a proper nouns for example) or search priority in a specific language : etc...
You can search for articles with ALL or ANY of your keywords, or a complete phrase, to NOT show result with certain words, put dashes before them, like this :
Search for a phrase or exact term : Or add an asterisk within a search as a placeholder for any unknown or wildcard terms :
Search for any one of several words ("OR" searches), put pipes|between|terms in OR searches, AND terms are separated by spaces :
Of course, you can always combine negative keywords or key-phrases :
The Combined Results mode is powered by Google, so supports all of Google's advanced search operators, including wildcards, range, and phrases in OR searches. For example :