Perhaps you should try some spelling variations:
"performance language" » "performance manager", "romance language", "romance languages"
"romanian language" » "croatian language", "romanic languages", "italian language"
"domain language" » "common language", "plain language", "foreign 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: (("performance language") OR ((("romanian language") OR ("domain language"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"performance language\") or (((\"romanian language\") OR (\"domain language\"))))*".
• Removing quotes may allow a broader search: (( performance language ) or ((( romanian language ) OR ( domain language ))))*.