Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
va phan » van phan, va phat, va phap
te cao » te bao
va han » van han, va hanh, va hang
cam tu » cam thu, nam tu, dam tu
va cam » va cham, va cac, va cao
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cao ky nang ma hoi. hieu va cam tu ((va han) or (va phan)) tai ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cao ky nang ma hoi. hieu va cam tu ((va han) OR (va phan)) tai ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te cao ky nang ma hoi. hieu va cam tu ((va han) or (va phan)) tai ((cua tre) or (cau tren))*.