Perhaps you should try some spelling variations:
"descriptions clauses" » "descriptions causes", "description causes", "descriptions uses"
"descriptions based" » "description based", "descriptors based", "descriptor based"
"descriptions part" » "description part", "descriptors part", "descriptions a"

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