Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thi » sach thu, sach tai, sach thieu
toc sach » hoc sach, doc sach, thuoc sach
thi hanh » thi thanh
cac toc » cac nuoc, cac thoi
cac toi » cac thoi
xa hanh » xa thanh, xa khanh, va hanh
ca hoi » cua hoi, xa hoi, co hoi
vi cua » vai cua, di cua

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 thi hanh ((ca hoi) or (cau hoi)). hieu qua ((cac toc) or (cac toi)) xa hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thi hanh ((ca hoi) OR (cau hoi)). hieu qua ((cac toc) OR (cac toi)) xa hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach thi hanh ((ca hoi) or (cau hoi)). hieu qua ((cac toc) or (cac toi)) xa hanh vi cua triet*.