Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
doi khung » doi khang, dai khung, voi khung
cua triet » cua viet, su triet, va triet
sach doi » sach hoi, sach moi, sach dao
khung co » khong co, chung co, chung cho
cham luc » nhan luc, cham cuu, chat lua
va hanh » van hanh, va thanh, va danh
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: thuoc sach doi khung co hoc. lieu va ((cham luc) or (cham soc)) va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach doi khung co hoc. lieu va ((cham luc) OR (cham soc)) va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach doi khung co hoc. lieu va ((cham luc) or (cham soc)) va hanh vi cua triet*.