Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
tu cach » tu cac
su sach » so sach, vu sach
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
x hoi » xa hoi, x ho, 5 hoi
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)) y nang ((x hoi) or (o hoi)). hieu van cam tuc va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) y nang ((x hoi) OR (o hoi)). hieu van cam tuc va hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) y nang ((x hoi) or (o hoi)). hieu van cam tuc va hanh vi cua viet*.