Perhaps you should try some spelling variations:
lam quoc » lam duoc, nam quoc, lam thuoc
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
quoc bo » quoc bao, nuoc bo, quoc co
benh te » benh tre, benh he, benh theo
benh ve » benh va, benh vien, benh viem
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
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 lang xa hoi. hieu va lam quoc bo ((benh te) or (benh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang xa hoi. hieu va lam quoc bo ((benh te) OR (benh ve)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu va lam quoc bo ((benh te) or (benh ve)) cua tre*.