Perhaps you should try some spelling variations:
douglas mair » douglas a, douglas m, douglas r
douglas mary » douglas a, douglas m, douglas r
first hint » first joint, first thing, first hand
daun yang » dan yang, du yang, tan yang
yang yan » yang yang, wang yan, yang fan
yan his » man his, yan risk
last » east, past, list
thing » things, think, thin

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: daun yang yan his ((first hint) OR (last thing)) feng ((douglas mair) OR (douglas mary)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "daun yang yan his ((first hint) or (last thing)) feng ((douglas mair) OR (douglas mary)) ;~".
• Adding a wildcard symbol may retrieve word variants: daun yang yan his ((first hint) or (last thing)) feng ((douglas mair) OR (douglas mary)) ;*.