Perhaps you should try some spelling variations:
ve triet » va trien, su triet
cau nuoc » cap nuoc, cac nuoc, dau nuoc
vu khanh » vu thanh, van khanh, duy khanh
hieu van » hieu va, thien van, lieu va
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
te sach » toc sach
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
vu ve » vu le, vu va, su ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (vu khanh)) ky nang xa hoi. hieu van cau nuoc ((va hanh) or (va danh)) vu ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (vu khanh)) ky nang xa hoi. hieu van cau nuoc ((va hanh) OR (va danh)) vu ve triet.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (vu khanh)) ky nang xa hoi. hieu van cau nuoc ((va hanh) or (va danh)) vu ve triet*.