Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
hoa doi » hoa dai, hoc doi, xoa doi
hoc hoi » hoc khoi, hoc hoa, hoc noi
va hanh » van hanh, va danh, ban hanh
ky tang » ky nang, ky dang, kho tang
thai ve » thai va, thai viet, thai den
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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 tang ((hoc hoi) or (hoa doi)). hieu van nam thuc ((va hanh) or (va thanh)) thai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang ((hoc hoi) OR (hoa doi)). hieu van nam thuc ((va hanh) OR (va thanh)) thai ve triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky tang ((hoc hoi) or (hoa doi)). hieu van nam thuc ((va hanh) or (va thanh)) thai ve triet*.