Perhaps you should try some spelling variations:
"descriptions clauses" » "descriptions causes", "description causes", "descriptions uses"
"descriptive clause" » "descriptive case", "descriptive feature", "descriptive image"
"descriptive claims" » "descriptive ethics", "descriptive names"
"descriptions phase" » "descriptions plate", "descriptions places", "descriptions part"
"descriptions based" » "description based", "descriptors based", "descriptor based"
"descriptive phase" » "descriptive case", "descriptive plates", "descriptive image"

Try widening your search to All Fields.

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