Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
danh sai » dung sai, danh bat, danh dau
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
ky dang » ky danh
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
xa danh » va danh, dia danh, nam danh
ve cam » ve cham, ve cac, va cam

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