Perhaps you should try some spelling variations:
lam duoc » nam duoc, luat duoc, lam thuoc
thu dang » thu hang, thu bang, thu dong
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
sach thu » sach thue, sach thieu, sach tham
te sach » toc sach
cua tre » cua te, cua triet, dua tren
va hang » van hang, va nang, va lang
cuu tre » cau tren, cau treo
lam luc » lao luc
xay hoi » xa hoi, tay hoi, cay phoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thu dang xay hoi. hieu van ((lam luc) or (lam duoc)) va hang va ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu dang xay hoi. hieu van ((lam luc) OR (lam duoc)) va hang va ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach thu dang xay hoi. hieu van ((lam luc) or (lam duoc)) va hang va ((cua tre) or (cuu tre))*.