Perhaps you should try some spelling variations:
nganh ky » nganh y, nganh xay, hanh ky
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, hieu ve
hanh dai » hanh tai, hanh dao, vanh dai
van hoi » van hoa, van hoc, van hoe
cac dac » cac dan, cac dai, cac bac
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
dac va » duc va, day va, dat va

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