Perhaps you should try some spelling variations:
hong pong » hong kong, hong jong, hong hong
yang minh » sang minh, yang mind, kang minah
dan data » can data, dan dana, dn data
data can » ata can, data case
can yang » dan yang, tan yang, chen yang
wang » wing, wan, lang
cong » congo, long, ong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yan) or (((hong pong) or (fang sheng)))) dan data can yang minh cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yan) OR (((hong pong) OR (fang sheng)))) dan data can yang minh cong shu ;.
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (((hong pong) or (fang sheng)))) dan data can yang minh cong shu ;*.