Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
kho tang » cao tang
hieu van » hieu va, thien van, lieu va
te sach » toc sach
tang xa » trang xa, tang ma, lang xa
cau tuc » cau truc, cau luc, cau phuc
va hang » van hang, va nang, va lang
tu cach » tu cac
cau tu » dau tu, cau truc
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) kho tang xa hoi. hieu van ((cau tuc) OR (cau tu)) va hang va cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) kho tang xa hoi. hieu van ((cau tuc) OR (cau tu)) va hang va cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) kho tang xa hoi. hieu van ((cau tuc) OR (cau tu)) va hang va cau treo*".