Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thi » sach tai, sach thieu, sach tham
sach thu » sach thue, sach thieu, sach tham
cac thoi » cac toi, cac hop, cac tro
hanh xu » hanh tu, hanh sua, hanh cua
cac tuc » cac toc, cac tu, cac tac
xa hanh » xa thanh, xa khanh, va hanh
xu hoi » xa hoi, lu hoi, vu 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) or (sach thu)) hanh xu hoi. lieu va ((cac tuc) or (cac thoi)) xa hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach thi) OR (sach thu)) hanh xu hoi. lieu va ((cac tuc) OR (cac thoi)) xa hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: toc ((sach thi) or (sach thu)) hanh xu hoi. lieu va ((cac tuc) or (cac thoi)) xa hanh vi cua triet*.