Perhaps you should try some spelling variations:
sach hien » sach tien, sach thieu, cach thien
hien hanh » dieu hanh
thanh lai » thanh hai, thanh lap, thanh loi
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
hanh cua » manh cua, hang cua, hanh sua
ha thanh » va thanh, pham thanh, phan thanh
cua hoi » cua moi
cac toc » cac nuoc, cac thoi
cac toi » cac thoi
lai cua » dai cua, hai cua, lai chau

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 hien hanh cua hoi. lieu va ((cac toc) or (cac toi)) ha thanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach hien hanh cua hoi. lieu va ((cac toc) OR (cac toi)) ha thanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach hien hanh cua hoi. lieu va ((cac toc) or (cac toi)) ha thanh lai cua triet*.