Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khanh vai » khanh van, hanh vi, hanh va
xa khanh » xa thanh, van khanh, dat khanh
sach thi » sach thu, sach tai, sach thieu
toc sach » hoc sach, doc sach, thuoc sach
thi hanh » thi thanh
cac toi » cac thoi
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
cac tuc » cac toc, cac tu, cac tac
ca hoi » cua hoi, xa hoi, co hoi

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 va ((cac tuc) or (cac toi)) xa khanh vai 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 va ((cac tuc) OR (cac toi)) xa khanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach thi hanh ((ca hoi) OR (cau hoi)). hieu va ((cac tuc) or (cac toi)) xa khanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: toc sach thi hanh ((ca hoi) OR (cau hoi)). hieu va ((cac tuc) or (cac toi)) xa khanh vai cua triet*.