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 cuu » hai cua, hai chu, hai cuc
va hanh » van hanh, va danh, ban hanh
cuu tre » cua tre, cau tren, cau treo
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
van hoi » van hoc, van hoe, van loi
ky lang » ky nang, ky dang, ky tang
ve cac » va cac, vien 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 hoi) or (van hoa)). hieu ve cac duc ((va hanh) or (va thanh)) hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh ky lang ((van hoi) OR (van hoa)). hieu ve cac duc ((va hanh) OR (va thanh)) hai cuu tre.
• Adding a wildcard symbol may retrieve word variants: hoc nganh ky lang ((van hoi) or (van hoa)). hieu ve cac duc ((va hanh) or (va thanh)) hai cuu tre*.