Perhaps you should try some spelling variations:
dua tren » dung tren
hieu te » hieu ve, hien te, hieu he
va hanh » van hanh, va thanh, ban hanh
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
te ban » te bao
ban bo » can bo, ban do, ban co
vi dua » vi du, vi dum, vi lua
x hoi » xa hoi, o hoi, x ho
bo va » bao va, do va, so va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang x hoi. hieu te ban bo va hanh vi dua tren~.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang x hoi. hieu te ban bo va hanh vi dua tren*.