Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
xuc van » duc van, luc van, vuc van
van cam » van nam, van lam, van cau
tu cach » tu cac
ly nang » ky nang, ly hang, ly vang
su sach » so sach, vu sach
vi cua » vai cua, di cua
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ly nang ((xa hoi) or (o hoi)). hieu van cam xuc van hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ly nang ((xa hoi) OR (o hoi)). hieu van cam xuc van hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ly nang ((xa hoi) or (o hoi)). hieu van cam xuc van hanh vi cua viet*.