Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh sai » dung sai, danh bat, danh dau
sai cua » dai cua, hai cua, lai cua
xa danh » va danh, dia danh, nam danh
hieu le » hieu ve, hieu ly, tieu le
hieu he » hieu ve, hiem he, hieu hien
tu sach » thu sach, su sach, tu cach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
thu xa » thu xac, thu ha, thu xe

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty nang xa hoi. ((hieu he) OR (hieu le)) nam thu xa danh sai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ty nang xa hoi. ((hieu he) or (hieu le)) nam thu xa danh sai cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ty nang xa hoi. ((hieu he) or (hieu le)) nam thu xa danh sai cua triet*.