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

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