Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
nam thuc » nam thuoc, am thuc, nam thu
cam tuc » cam xuc, cam tu, dam thuc
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
ty dang » ty xang, ty hang, ty dong

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