Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
van bac » van ban, van bao, van hac
bac do » ban do, bac bo, bac ho
do van » dao van, vo van, so van
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thu sach)) ky nang x hoi. hieu van bac do van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky nang x hoi. hieu van bac do van hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky nang x hoi. hieu van bac do van hanh vi cua triet*.