Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
y quang » ly quang, _ quang, x quang
cua hoi » cua moi
hieu va » lieu va, hieu qua
cac luc » cau luc, coc luc, cac nuoc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ca hoi » cau hoi, xa hoi, co hoi
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y quang ((ca hoi) or (cua hoi)). hieu va cac luc va danh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y quang ((ca hoi) OR (cua hoi)). hieu va cac luc va danh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: te sach y quang ((ca hoi) or (cua hoi)). hieu va cac luc va danh vi cua viet*.