Perhaps you should try some spelling variations:
luat duoc » luat tuc
toc sach » hoc sach, doc sach, thuoc sach
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
van luat » dan luat, va luat, van xuat
xay hoi » xa hoi, tay hoi, cay phoi
va nang » van nang, da nang, cam nang
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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

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