Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
va thanh » gia thanh, va tinh, le thanh
qua cam » qua cham, qua cac, qua ca
lam cua » nam cua, lam chat
so hoc » co hoc, mo hoc, so hoa
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ky nang ((o hoi) or (so hoc)). hieu qua cam xuc ((va thanh) or (ban thanh)) lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang ((o hoi) OR (so hoc)). hieu qua cam xuc ((va thanh) OR (ban thanh)) lam cua triet.
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang ((o hoi) or (so hoc)). hieu qua cam xuc ((va thanh) or (ban thanh)) lam cua triet*.