Perhaps you should try some spelling variations:
hanh dong » anh dong, ha dong
cuc triet » cua triet, su triet, cac trieu
thu sach » tu sach, thuat sach, thuoc sach
hoc duoc » hoc nuoc, hoa duoc, hoc dung
dong cuc » dong luc, dong cua, tong cuc
cao hoi » cau hoi, cao hoc, tao hoi
hieu va » lieu va, hieu qua
duoc va » nuoc va, duc va, duoc ma
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi
va hoc » van hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ((cao hoi) or (co hoi)). hieu va hoc duoc va hanh dong cuc triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ((cao hoi) OR (co hoi)). hieu va hoc duoc va hanh dong cuc triet.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((cao hoi) or (co hoi)). hieu va hoc duoc va hanh dong cuc triet*.