Perhaps you should try some spelling variations:
douglas john » douglas jones, douglas j, douglas o
last things » last thing, first things, smart things
things zeng » things zhang, things end, things using
douglas bin » douglas b, douglas mair
yan liang » yang liang, wang liang, you liang
yan ling » yang liang, yang jing, zhan ling
i last » _ last, a last, 3 last
wang » wing, wan, lang

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 ((yan ling) OR (yan liang)) i last things zeng ((douglas bin) OR (douglas john)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan ling) OR (yan liang)) i last things zeng ((douglas bin) or (douglas john)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan ling) OR (yan liang)) i last things zeng ((douglas bin) or (douglas john)) ;*.