Perhaps you should try some spelling variations:
hoc hanh » hoc nhanh, hoc thanh, hoc anh
nang van » dang van, tang van, lang van
hanh hai » thanh hai, nhanh hai, hang hai
hanh ky » hanh kem
van hoc » van hoa
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
ve cao » ve bao, ve cac, ve co
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hanh ky nang van hoc. hieu ((ve cao) or (va cao)) duc va hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hanh ky nang van hoc. hieu ((ve cao) OR (va cao)) duc va hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc hanh ky nang van hoc. hieu ((ve cao) or (va cao)) duc va hanh hai cua tre*.