Perhaps you should try some spelling variations:
douglas mair » douglas mary, douglas m, douglas r
east thing » last thing, last things, east china
ying yang » yang yang, yin yang, ying chang
douglas a » douglas f, douglas w
tan ying » fan ying, ran ying, tan yang
yang xi » yang di, yang yi, yang jui
zeng » eng, feng, peng

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: tan ying yang xi ((first things) OR (east thing)) zeng ((douglas mair) OR (douglas a)) ;~.
• Adding a wildcard symbol may retrieve word variants: tan ying yang xi ((first things) or (east thing)) zeng ((douglas mair) or (douglas a)) ;*.