Perhaps you should try some spelling variations:
"descriptions clauses" » "descriptions causes", "description causes", "descriptions uses"
"descriptions places" » "descriptions plate", "descriptions plus", "descriptions paper"
"descriptions phase" » "descriptions plate", "descriptions part", "descriptions plus"
"descriptions based" » "descriptors based", "descriptor based", "descriptions a"
"description based" » "descriptor based", "description des"

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: (("descriptions clauses") OR ((((("descriptions phase") OR ("descriptions places"))) OR ((("descriptions based") OR ("description based")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"descriptions clauses\") or (((((\"descriptions phase\") or (\"descriptions places\"))) or (((\"descriptions based\") OR (\"description based\"))))))".
• Removing quotes may allow a broader search: (( descriptions clauses ) or ((((( descriptions phase ) or ( descriptions places ))) or ((( descriptions based ) OR ( description based )))))).
• Adding a wildcard symbol may retrieve word variants: (("descriptions clauses") or ((((("descriptions phase") or ("descriptions places"))) or ((("descriptions based") OR ("description based"))))))*.