Perhaps you should try some spelling variations:
"programming languages" » "program language", "program languages"
"programming language" » "program language"
"process language" » "processing language", "cross language"
"gram language" » "from language", "program language", "graph languages"

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: (((("programming language") OR ("programming languages"))) OR ((("process language") OR ("gram language")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"programming language\") OR (\"programming languages\"))) or (((\"process language\") or (\"gram language\"))))".
• Removing quotes may allow a broader search: (((( programming language ) OR ( programming languages ))) or ((( process language ) or ( gram language )))).
• Adding a wildcard symbol may retrieve word variants: (((("programming language") OR ("programming languages"))) or ((("process language") or ("gram language"))))*.