Perhaps you should try some spelling variations:
thanh dong » thanh duong, thanh cong, hanh dong
thu sach » thuat sach, thuoc sach, thu hoach
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
tu sach » su sach, te sach, tu cach
cao hoi » cau hoi, cao hoc, tao hoi
hieu va » lieu va, hieu qua
dong su » dang su, dong tu, dong luc
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi
va hoc » van hoc
nuoc » quoc, duoc, ngoc

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) or (tu sach)) y nang ((cao hoi) or (co hoi)). hieu va hoc nuoc va thanh dong su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) y nang ((cao hoi) OR (co hoi)). hieu va hoc nuoc va thanh dong su triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) y nang ((cao hoi) or (co hoi)). hieu va hoc nuoc va thanh dong su triet*.