Perhaps you should try some spelling variations:
wang liang » wang yang
yang mind » yang cindy, yang jin, sang minh
liang ka » liang dan, liang tan, jiang ke
than bau » than bad, than a, than you
dan data » can data, dan dana, dn data
how hai » how has, how ai, how have
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 (dan data)) yang mind ((how hai) OR (how hci)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang ka ((than bau) or (dan data)) yang mind ((how hai) OR (how hci)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang liang ka ((than bau) or (dan data)) yang mind ((how hai) OR (how hci)) ;*.