Perhaps you should try some spelling variations:
chasse john » change john, class john, chassama john
wang liang » wang yang
chang john » change john, changed john, chang soon
liang dan » liang tan, king dan, liang sun
khan syed » ahsan syed, shah syed, khan sher
wong yue » wang yue, hong yu
han en » han men, van en, chan eng

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 liang dan ((han en) OR (khan syed)) ((chang john) OR (chasse john)) wong yue ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang dan ((han en) or (khan syed)) ((chang john) or (chasse john)) wong yue ;*.