Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
toc sach » hoc sach, doc sach, thuoc sach
nam thuc » nam thuoc, nam thu, nam tu
thanh de » hanh de, thanh ve, thanh do
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
de cua » le cua, te cua, dieu cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang xa hoi. lieu va ((nam thuc) or (am thuc)) day thanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. lieu va ((nam thuc) OR (am thuc)) day thanh de cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. lieu va ((nam thuc) or (am thuc)) day thanh de cua te*.