Perhaps you should try some spelling variations:
cheng tran » cheng han, cheng guan
wang yang » wang yan, wang liang, wang yanling
dat zhang » hao zhang, yan zhang
lang yan » wang yan, zhang yan, yang yang
yang jui » yang judy, yang xi
tran dat » tran nam, tran van
yang yi » yang xi
zhang y » zhang ya, zhang yi, zhang _

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: ((lang yan) OR (wang yang)) ((((yang jui) OR (yang yi))) OR (yang di)) cheng tran dat zhang y ;~.
• Adding a wildcard symbol may retrieve word variants: ((lang yan) or (wang yang)) ((((yang jui) or (yang yi))) or (yang di)) cheng tran dat zhang y ;*.