Perhaps you should try some spelling variations:
"descriptions places" » "descriptions plate", "descriptions plus", "descriptions papers"
"descriptive clause" » "descriptive case", "descriptive claims", "descriptions clauses"
"descriptions paper" » "descriptions papers", "description paper", "descriptions papetri"
"descriptions based" » "description based", "descriptors based", "descriptor based"

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