Perhaps you should try some spelling variations:
quoc ban » quoc bao, quoc lan, quoc quan
te sach » toc sach
benh te » benh tre, benh ve, benh he
quoc ba » quoc bao, quoc va, quoc ha
cua tre » cua te, cuu tre, cua triet
tay hoi » tay ho, tao hoi, tay thai
xay hoi » xa hoi, cay phoi, gay thoi
y dang » ky dang, 2 dang, _ dang
te cua » tue cua, le cua, de cua
va lam » van lam, va lap

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 y dang ((xay hoi) OR (tay hoi)). lieu va lam ((quoc ba) or (quoc ban)) benh te cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y dang ((xay hoi) OR (tay hoi)). lieu va lam ((quoc ba) OR (quoc ban)) benh te cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y dang ((xay hoi) OR (tay hoi)). lieu va lam ((quoc ba) or (quoc ban)) benh te cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y dang ((xay hoi) OR (tay hoi)). lieu va lam ((quoc ba) or (quoc ban)) benh te cua tre*.