Perhaps you should try some spelling variations:
"green language" » "greek language", "greek languages", "great language"
"given language" » "driven language", "giving language", "driven languages"
"gen language" » "gene language", "men language", "zen language"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("green language") OR ("given language"))) OR ("gen language")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"green language\") OR (\"given language\"))) or (\"gen language\"))".
• Removing quotes may allow a broader search: (((( green language ) OR ( given language ))) or ( gen language )).
• Adding a wildcard symbol may retrieve word variants: (((("green language") OR ("given language"))) or ("gen language"))*.