Perhaps you should try some spelling variations:
"green language" » "greek language", "greek languages", "given language"
"gene language" » "genes language", "gender language", "genres language"
"gen language" » "open language", "when language", "can 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 ((("gene language") OR ("gen language")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"green language\") or (((\"gene language\") OR (\"gen language\"))))".
• Removing quotes may allow a broader search: (( green language ) or ((( gene language ) OR ( gen language )))).
• Adding a wildcard symbol may retrieve word variants: (("green language") or ((("gene language") OR ("gen language"))))*.