Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
su triet » su viet, su tien, ve triet
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, va tinh, le thanh
dong su » dang su, dong tu, dong luc
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky nang ((xa hoi) or (mai hoi)). hieu ve nam thuc ((va thanh) or (ban thanh)) dong su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky nang ((xa hoi) OR (mai hoi)). hieu ve nam thuc ((va thanh) OR (ban thanh)) dong su triet.
• Adding a wildcard symbol may retrieve word variants: te san ky nang ((xa hoi) or (mai hoi)). hieu ve nam thuc ((va thanh) or (ban thanh)) dong su triet*.