Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
chua tre » chua tri, cua tre, chua trieu
hoc cac » hoc cao
nang co » nang cao, nang doc, nang noi
hieu ve » hieu van
hieu va » lieu va, hieu qua
va chua » vua chua, ca chua, va chu
thu va » thuc va, thue va, tu 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 cac ky nang co hoc. ((hieu ve) or (hieu va)) nam thu va thanh va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac ky nang co hoc. ((hieu ve) OR (hieu va)) nam thu va thanh va chua tre.
• Adding a wildcard symbol may retrieve word variants: hoc cac ky nang co hoc. ((hieu ve) or (hieu va)) nam thu va thanh va chua tre*.