Perhaps you should try some spelling variations:
wang yidan » wang yan
chang soon » chang won, chin soon, chang gordon
jeong shu » jeong su, cong shu
yidan yi » qian yi, yin yi
tang min » chang min, sang minh, yang mind
kaw min » kyaw min, kan min, law main
yi hua » li hua, ya hua, yi hui

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 yidan yi hua (rene OR irene) ((((tang min) OR (chang soon))) OR (kaw min)) jeong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang yidan yi hua (rene or irene) ((((tang min) or (chang soon))) or (kaw min)) jeong shu ;*.