Perhaps you should try some spelling variations:
chang kwok » chang deok, chang won
wang wang » wang yang, wang liang, wang yan
khan sher » han shen, khan syed
kwok wong » kok wing
wang dan » wang yan, wang ban, wang yidan
than she » than one, than we, can she
wong yue » wang yue, hong yu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang dan ((than she) or (khan sher)) chang kwok wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang dan ((than she) OR (khan sher)) chang kwok wong yue ;*.