Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc va » thuc va, thuoc ma, thuong va
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
ve nam » he nam, va nam, le nam
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: tu sach ky nang ((xa hoi) or (ha noi)). hieu ve nam thuoc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((xa hoi) OR (ha noi)). hieu ve nam thuoc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((xa hoi) or (ha noi)). hieu ve nam thuoc va hanh vi cua triet*.