Perhaps you should try some spelling variations:
douglas mary » douglas mair, douglas a, douglas m
yang ying » yang yang, yang jing, huang ying
dan yang » daun yang, tan yang, wang yang
ying jin » yang jin, jing ji, yang jie
things » thinks, thins
thing » think, thin
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: dan yang ying jin ((last (things OR thinks)) OR (last thing)) zeng douglas mary ;~.
• Adding a wildcard symbol may retrieve word variants: dan yang ying jin ((last (things or thinks)) or (last thing)) zeng douglas mary ;*.