Perhaps you should try some spelling variations:
douglas john » douglas jones, douglas j, douglas o
things zeng » things zhang, things end, things using
douglas bin » douglas b, douglas mair
yan liang » yang liang, wang liang, you liang
i last » _ last, 3 last, 4 last
a last » _ last, a las
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan liang ((i last) or (a last)) things zeng ((douglas bin) or (douglas john)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan liang ((i last) OR (a last)) things zeng ((douglas bin) OR (douglas john)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yan liang ((i last) or (a last)) things zeng ((douglas bin) or (douglas john)) ;*.