Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh ky » nganh y, nganh xay, hanh ky
va thanh » gia thanh, ban thanh, va tinh
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
cao duc » dao duc, cao suc, giao duc
hieu ve » hieu va, hieu van
van hoe » van hoc, van hieu, van hien
ky lang » ky nang, ky dang, ky tang
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nganh ky lang ((van hoe) OR (van hoa)). hieu ve cao duc ((va hanh) or (va thanh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh ky lang ((van hoe) OR (van hoa)). hieu ve cao duc ((va hanh) OR (va thanh)) hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nganh ky lang ((van hoe) OR (van hoa)). hieu ve cao duc ((va hanh) or (va thanh)) hai cua tre*".