Perhaps you should try some spelling variations:
vanh dai » van dai, vanh tai, lanh dao
hieu van » hieu va, thien van, lieu va
cuu tre » cua tre, cau tren, cau treo
dai cuu » dai cua, dai huu
va vanh » va van, va danh, va hanh
cam tuc » cam xuc, nam thuc, dam thuc
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
cam tu » cam thu, nam tu, dam tu
te bai » te bao, te tai, te ban
te lai » te tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te lai) or (te bai)) ky nang ma hoi. hieu van ((cam tuc) or (cam tu)) va vanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te lai) OR (te bai)) ky nang ma hoi. hieu van ((cam tuc) OR (cam tu)) va vanh dai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((te lai) or (te bai)) ky nang ma hoi. hieu van ((cam tuc) or (cam tu)) va vanh dai cuu tre*.