Perhaps you should try some spelling variations:
"descriptions clauses" » "descriptions causes", "description causes", "descriptions uses"
"descriptions phase" » "descriptions plate", "descriptions places", "descriptions part"
"descriptions based" » "description based", "descriptors based", "descriptions a"
"descriptive phase" » "descriptive case", "descriptive plates", "descriptive clause"

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 ("descriptions clauses"))) OR ((("descriptions phase") OR ((("descriptions based") OR ("descriptor based")))))).
• Removing quotes may allow a broader search: (((( descriptive phase ) or ( descriptions clauses ))) or ((( descriptions phase ) or ((( descriptions based ) or ( descriptor based )))))).
• Adding a wildcard symbol may retrieve word variants: (((("descriptive phase") or ("descriptions clauses"))) or ((("descriptions phase") or ((("descriptions based") or ("descriptor based"))))))*.