Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
sanh tu » danh tu, hanh tu, manh tu
nang ma » tang ma, sang ma, nang cao
van cam » van nam, van lam, van cau
ma hoi » mai hoi, xa hoi, ma hoa
anh tu » anh tuan

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 tu) or (anh tu)) nang ma hoi. hieu van cam duc van thanh pho ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sanh tu) OR (anh tu)) nang ma hoi. hieu van cam duc van thanh pho ((cua tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: so ((sanh tu) or (anh tu)) nang ma hoi. hieu van cam duc van thanh pho ((cua tre) or (cau treo))*.