Perhaps you should try some spelling variations:
kho tang » cao tang
hieu van » hieu va, thien van, hieu ve
cau tra » ca tra, cau ra, cau truc
san kho » san khoa, san cho, lan kho
cau tre » cau tren, cau treo, cuu tre
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
tang ma » mang may, tang van
luc va » duc va, tuc va, loc va
ma hoi » mai hoi, xa hoi, ma hoa
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san kho tang ma hoi. ((hieu van) or (lieu va)) cau luc va hanh de ((cau tre) or (cau tra))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san kho tang ma hoi. ((hieu van) OR (lieu va)) cau luc va hanh de ((cau tre) OR (cau tra)).
• Adding a wildcard symbol may retrieve word variants: tu san kho tang ma hoi. ((hieu van) or (lieu va)) cau luc va hanh de ((cau tre) or (cau tra))*.