Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
toc sach » hoc sach, doc sach, thuoc sach
danh vi » dinh vi, danh di, danh va
tai hoi » tai khoi, dai hoi, tai hai
tu dung » tuc dung, tu duong, su dung
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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) or (toc sach)) tu dung tai hoi. hieu va cam xuc va ((danh vi) OR (hanh vi)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu dung tai hoi. hieu va cam xuc va ((danh vi) OR (hanh vi)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) tu dung tai hoi. hieu va cam xuc va ((danh vi) OR (hanh vi)) cua viet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) tu dung tai hoi. hieu va cam xuc va ((danh vi) OR (hanh vi)) cua viet*.