Perhaps you should try some spelling variations:
douglas john » douglas jones, douglas j, douglas o
douglas bin » douglas b, douglas mair
wang yang » wang yan, wang liang, wang yanling
dan yang » daun yang, tan yang, yang yang
jing ji » ying jin
ji last » i last, die last, his last
thing » things, 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: ((wang yang) OR (dan yang)) jing ji last thing zeng ((douglas bin) OR (douglas john)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (dan yang)) jing ji last thing zeng ((douglas bin) OR (douglas john)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (dan yang)) jing ji last thing zeng ((douglas bin) OR (douglas john)) ;*.