Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
nuoc sach » nguoi sach, hoc sach, cuoc cach
thanh tai » thanh hai, thanh toan, doanh tai
hieu cua » hieu qua, bieu cua, hieu ca
dieu cua » dieu tra
sach ty » sach y, sach tu, sach thu
ca viet » va viet, co viet, hoa viet
ty ang » ty xang, ty hang, ty anh
ang xa » lang xa, mang xa, dang xay
cac lo » cac lop, cac co, cac bo
lo ban » co ban, lo van, ly ban
tai ca » tai cac, tai cao, tai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ty ang xa hoi. ((hieu cua) or (dieu cua)) cac lo ban thanh tai ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ty ang xa hoi. ((hieu cua) OR (dieu cua)) cac lo ban thanh tai ca viet.
• Adding a wildcard symbol may retrieve word variants: nuoc sach ty ang xa hoi. ((hieu cua) or (dieu cua)) cac lo ban thanh tai ca viet*.