Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
so sanh » do sanh
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cac duc » cac du, cao duc, cac dac
sanh ky » hanh ky, sang ky, nganh ky
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

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