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
yang jun » yang jui, pang jun, yang jin
yang jie » yang jin, yang di, yang jui
his last » als last, his host, his land

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