Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cac cong » cua cong
cong ban » cong bang, cong san, cong tan
thanh vi » hanh vi, thanh va, thanh ve
ve triet » su triet
va trien » va truyen, va thiet, va tuyen
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x hoi. lieu va cac cong ban thanh vi ((ve triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x hoi. lieu va cac cong ban thanh vi ((ve triet) OR (va trien)).
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x hoi. lieu va cac cong ban thanh vi ((ve triet) or (va trien))*.