Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
thanh tai » thanh hai, thanh toan, doanh tai
dieu cua » dieu tra
hieu cua » hieu qua, bieu cua, hieu ca
sach tu » sach thu, cach tu, sach ty
ca viet » va viet, co viet, hoa viet
tu xang » ty xang, tu lang, tu quang
xang xa » lang xa, mang xa, ang xa
tai ca » tai cac, tai cao, tai cua
le va » le van, ly va, ke va
te va » tu va

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 tu xang xa hoi. ((hieu cua) or (dieu cua)) cac ((le va) or (te va)) thanh tai ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach tu xang xa hoi. ((hieu cua) OR (dieu cua)) cac ((le va) OR (te va)) thanh tai ca viet.
• Adding a wildcard symbol may retrieve word variants: nuoc sach tu xang xa hoi. ((hieu cua) or (dieu cua)) cac ((le va) or (te va)) thanh tai ca viet*.