Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
quoc ban » quoc bao, quoc lan, quoc quan
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
xuc ban » duc ban, cuc ban, xuat ban
cua tre » cua te, cuu tre, cua triet
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: su sach ty xang xa hoi. lieu va lam ((xuc ban) OR (quoc ban)) thanh van ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. lieu va lam ((xuc ban) OR (quoc ban)) thanh van ((cua tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang xa hoi. lieu va lam ((xuc ban) OR (quoc ban)) thanh van ((cua tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. lieu va lam ((xuc ban) OR (quoc ban)) thanh van ((cua tre) or (su triet))*.