Perhaps you should try some spelling variations:
yiqian wang » yijiang wang, liqin wang, qian wang
yidan wang » qian wang, yan wang, yuan wang
chen zhang » cheng zhang, zhen zhang, chen zheng
zhang tang » zhang fang, zhang ting, zhang zhang
tang zheng » wang zheng, fang sheng, fang zhen
zheng zhi » zhang zhi, zhong zhi, chen zhi
a chen » ta chen, _ chen, n chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yidan wang) or (yiqian wang)) a chen zhang tang zheng zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yidan wang) OR (yiqian wang)) a chen zhang tang zheng zhi ;.
• Adding a wildcard symbol may retrieve word variants: wang ((yidan wang) or (yiqian wang)) a chen zhang tang zheng zhi ;*.