Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cau luc » cau truc, cau phuc
hanh di » hanh vi, hanh de, hang di
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua

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 ky nang ma hoi. hieu van ((cam xuc) OR (cau luc)) van hanh di cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu van ((cam xuc) or (cau luc)) van hanh di cua triet*.