Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
lam quoc » lam duoc, nam quoc, lam thuoc
te sach » toc sach
lang xa » lang ha, dang xay, lang van
van lam » van nam
quoc bo » quoc bao, nuoc bo, quoc co
bo benh » so benh, o benh, ba benh
benh ve » benh va, benh vien, benh viem
cua tre » cua te, cuu tre, dua tren
y lang » o lang, _ lang, tay lang

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 van lam quoc bo benh ve ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang xa hoi. hieu van lam quoc bo benh ve ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu van lam quoc bo benh ve ((cua tre) OR (cua triet))*.