Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
nhanh ky » hanh ky, nhan ky, nganh ky
lang van » dang van, tang van, hoang van
hai cua » thai cua, dai cua, hoi cua
va nang » van nang, da nang, kha nang
cac duc » cac du, cao duc, cac dac
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
hieu ve » hieu van
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nhanh ky lang van hoi. ((hieu ve) OR (hieu va)) cac duc ((va nang) or (cam nang)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhanh ky lang van hoi. ((hieu ve) OR (hieu va)) cac duc ((va nang) OR (cam nang)) hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nhanh ky lang van hoi. ((hieu ve) OR (hieu va)) cac duc ((va nang) or (cam nang)) hai cua tre".
• Adding a wildcard symbol may retrieve word variants: hoc nhanh ky lang van hoi. ((hieu ve) OR (hieu va)) cac duc ((va nang) or (cam nang)) hai cua tre*.