Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
da thanh » dao thanh, dat thanh, dam thanh
cua viet » ca viet, cua vat, cua dieu
nang xa » nang x, lang xa, nang ma
va nam » van nam, ha nam, va nay
thu da » thu dac, thu dai, thu dau

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) or (hoc sach)) ky nang xa hoi. lieu va nam thu da thanh doi ((cua viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ky nang xa hoi. lieu va nam thu da thanh doi ((cua viet) OR (hoa viet)).
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) ky nang xa hoi. lieu va nam thu da thanh doi ((cua viet) or (hoa viet))*.