Perhaps you should try some spelling variations:
"descriptions clauses" » "descriptions causes", "descriptions uses", "descriptions chapter"
"description causes" » "description use", "description chapter", "description des"
"descriptions plate" » "descriptions places", "descriptions state", "descriptions phase"
"descriptions based" » "description based", "descriptors based", "descriptor based"

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