Perhaps you should try some spelling variations:
yan liang » yang liang, wang liang, yan wang
you liang » you xian, you liangzhi
yang yang » wang yang, wang yan
boon hong » boon chong, boon siong
kong van » cong van, duong van, kong hang
a chen » ta chen, _ chen, z chen
n chen » _ chen, z chen, don chen

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: qian ((((yan liang) OR (you liang))) OR (yang yang)) ((a chen) OR (n chen)) boon hong kong van ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "qian ((((yan liang) or (you liang))) or (yang yang)) ((a chen) OR (n chen)) boon hong kong van ;~".
• Adding a wildcard symbol may retrieve word variants: qian ((((yan liang) or (you liang))) or (yang yang)) ((a chen) OR (n chen)) boon hong kong van ;*.