Perhaps you should try some spelling variations:
yiqian wang » yijiang wang, liqin wang, qian wang
sher zhang » zhen zhang, shen chang
khan sher » han shen, khan syed, than she
zhang bin » zhang xin, zhang jin, zhang lin
zhang zhi » zhong zhi, zhang wei, zhang dai
yan wang » yuan wang, yang yang, qian wang

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 ((yiqian wang) OR (yan wang)) khan sher zhang bin ((zhang zhi) OR (wang zhi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yiqian wang) or (yan wang)) khan sher zhang bin ((zhang zhi) or (wang zhi)) ;*.