Perhaps you should try some spelling variations:
"descriptive plates" » "descriptive poem"
"descriptions phase" » "descriptions plate", "descriptions places", "descriptions based"
"descriptors based" » "descriptor based", "description based", "descriptors a"
"descriptive data" » "descriptive _"

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