Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
vu sach » su sach, vu khach
ty nang » ky nang, ty xang, ty hang
nang o » nang co, nang ho, nang ro
va cam » va cham, va cac, va cao
o hoi » co hoi, o hoc, o hai
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vu bach)) ty nang o hoi. lieu va cam xuc ((ban thanh) or (van hanh)) vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ty nang o hoi. lieu va cam xuc ((ban thanh) OR (van hanh)) vi va triet.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) ty nang o hoi. lieu va cam xuc ((ban thanh) or (van hanh)) vi va triet*.