Perhaps you should try some spelling variations:
douglas mair » douglas mary, douglas a, douglas m
yang ying » yang yang, yang jing, huang ying
dan yang » daun yang, tan yang, wang yang
ying his » ying jin, ying hua
things » thinks, thins
thing » think, thin
zeng » eng, feng, peng

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: dan yang ying his ((last (things OR thinks)) or (last thing)) zeng douglas mair ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dan yang ying his ((last (things OR thinks)) OR (last thing)) zeng douglas mair ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dan yang ying his ((last (things OR thinks)) or (last thing)) zeng douglas mair ;*".