Perhaps you should try some spelling variations:
based working » base working, based parking, basic working
baron working » carbon working, button working, daemon working
world baron » world aaron, world patron, lord baron
word based » work based, card based, keyword based

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: (( word based working paper ) OR ( world baron working papers )).
• Adding a wildcard symbol may retrieve word variants: (( word based working paper ) or ( world baron working papers ))*.