Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
nuoc sach » nguoi sach, hoc sach, cuoc cach
hieu cua » hieu qua, dieu cua, bieu cua
dieu tra » dieu tri, kiem tra, dieu cua
va thanh » gia thanh, ban thanh, va tinh
cua viet » ca viet, hoa viet, cua vat
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
tai cua » thai cua, tai cuc, tri cua
cac ly » cac ky, cac le, cam ly

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