Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
danh hai » dang hai, lanh hai, manh hai
viec cac » vien cac, viec cua, viec lam
nganh ky » nganh y, nganh xay, nganh co
hai cua » thai cua, dai cua, hoi cua
va danh » va dinh, va dan, va hanh
cac duc » cac du, cao duc, cac dac
cua tre » cua te, cuu tre, cua triet
van hoi » van hoc, van hoe, van loi
hanh ky » hanh kem

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) or (hanh ky)) lang ((van hoi) or (van hoa)). hieu viec cac duc va danh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nganh ky) OR (hanh ky)) lang ((van hoi) OR (van hoa)). hieu viec cac duc va danh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc ((nganh ky) or (hanh ky)) lang ((van hoi) or (van hoa)). hieu viec cac duc va danh hai cua tre*.