Perhaps you should try some spelling variations:
things zhang » things change, things sharing, cheng zhang
douglas john » douglas jones, douglas j, douglas o
things zeng » things end, things using
douglas bin » douglas b, douglas mair
yan ling » yan liang, yang liang, yang jing
ling i » ling li, 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 i last ((things zeng) OR (things zhang)) ((douglas bin) OR (douglas john)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ling i last ((things zeng) OR (things zhang)) ((douglas bin) or (douglas john)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan ling i last ((things zeng) OR (things zhang)) ((douglas bin) or (douglas john)) ;*.