Perhaps you should try some spelling variations:
vien nganh » vien thanh
hanh trinh » canh tranh, hanh chinh
luat bong » luat cong, luat trong, luan cong
doc vien » hoc vien, doc viet, doc tieng
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc vien nganh - hanh trinh luat bong ((cong tan) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc vien nganh - hanh trinh luat bong ((cong tan) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doc vien nganh - hanh trinh luat bong ((cong tan) or (cong san)) toan ban*.