Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
nuoc sach » nguoi sach, hoc sach, cuoc cach
thanh doi » thanh loi, thanh moi, thanh do
nam thuc » nam thuoc, nam thu, nam tu
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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 ky nang xa hoi. lieu va ((nam thuc) or (am thuc)) day thanh doi ((cua tu) OR (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ky nang xa hoi. lieu va ((nam thuc) OR (am thuc)) day thanh doi ((cua tu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ky nang xa hoi. lieu va ((nam thuc) or (am thuc)) day thanh doi ((cua tu) OR (cua su))".
• Adding a wildcard symbol may retrieve word variants: nuoc sach ky nang xa hoi. lieu va ((nam thuc) or (am thuc)) day thanh doi ((cua tu) OR (cua su))*.