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

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