Perhaps you should try some spelling variations:
quoc ban » quoc bao, quoc lan, quoc quan
lam quoc » lam duoc, nam quoc, lam thuoc
canh tay » canh tac, thanh tay, anh ta
vai cua » dai cua, hai cua, lai cua
ban ban » ban banh, van ban, can ban
hieu va » lieu va, hieu qua
sach tu » sach thu, cach tu, sach ty
vi cua » di cua
va lam » van lam, va lap
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((canh tay) or (sach tu)) nang x hoi. hieu va lam quoc ban ban ((vi cua) OR (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((canh tay) OR (sach tu)) nang x hoi. hieu va lam quoc ban ban ((vi cua) OR (vai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((canh tay) or (sach tu)) nang x hoi. hieu va lam quoc ban ban ((vi cua) OR (vai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu ((canh tay) or (sach tu)) nang x hoi. hieu va lam quoc ban ban ((vi cua) OR (vai cua)) triet*.