Perhaps you should try some spelling variations:
wang liang » wang yang
sang minh » kang minah, anh minh, song min
liang ka » liang dan, liang tan, jiang ke
than bau » than bad, than a, than you
can data » can tata, dan data, fan data
minh how » mind how, minh hoa, myth how
how hci » how heis

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 ka ((than bau) OR (can data)) sang minh how hci ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang ka ((than bau) or (can data)) sang minh how hci ;*.