Perhaps you should try some spelling variations:
thien van » thi van
cau treo » cau theo, cau tren, cau triet
kho tang » cao tang
duc ngan » duc ngon, duc nhan, luc ngan
cuu tre » cua tre, cau tren
hang vi » hang va, hanh vi, hang di
cam duc » cam xuc, cao duc, pham duc
san kho » san khoa, san cho, lan kho
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
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 xa hoi. ((hieu va) or (thien van)) cam duc ngan hang vi ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san kho tang xa hoi. ((hieu va) OR (thien van)) cam duc ngan hang vi ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san kho tang xa hoi. ((hieu va) or (thien van)) cam duc ngan hang vi ((cuu tre) OR (cau treo))*".