Perhaps you should try some spelling variations:
"descriptive clause" » "descriptive claims", "descriptions clauses", "descriptive feature"
"descriptions phase" » "descriptions plate", "descriptions places", "descriptions based"
"descriptive phase" » "descriptive plates", "descriptive image", "descriptive plan"
"descriptive case" » "descriptive based", "description case", "descriptive name"

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