Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
cau treo » cau theo, cau tren, cau triet
kho tang » cao tang
tang ma » mang may, tang van
cuu tre » cua tre, cau tren
xac kho » cac khoi, dac khoa, cac khoa
su xac » pu xac, su cac
va cam » va cham, va cac, va cao
ve cac » va cac, vien cac
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: su xac kho tang ma hoi. hieu ((ve cac) or (va cam)) duc tan thanh san ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac kho tang ma hoi. hieu ((ve cac) OR (va cam)) duc tan thanh san ((cuu tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: su xac kho tang ma hoi. hieu ((ve cac) or (va cam)) duc tan thanh san ((cuu tre) or (cau treo))*.