Perhaps you should try some spelling variations:
kho tang » cao tang
hieu van » hieu va, thien van, lieu va
danh dau » lanh dao, hang dau, danh tu
cau tren » cu tren, dau tren, ca tren
thu san » thuy san, thu ban, phu san
san kho » san khoa, san cho, lan kho
tang xa » trang xa, tang ma, lang xa
van cau » van dau, van hau, van chat
cau luc » cau truc, cau phuc
va danh » va dinh, va dan, va hanh
cau tre » cau treo, cau tra, cuu tre
luc va » duc va, tuc va, loc va

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

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