Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh tai, hanh van
hanh va » hang va, hanh vi
hieu va » lieu va, hieu qua
tu sach » thu sach, su sach, tu cach
xang xa » lang xa, mang xa, ang xa
te sach » toc sach
cam tuc » cam xuc, cam tu, nam thuc
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) ty xang xa hoi. hieu va cam tuc va ((hanh vai) OR (hanh va)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty xang xa hoi. hieu va cam tuc va ((hanh vai) OR (hanh va)) cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ty xang xa hoi. hieu va cam tuc va ((hanh vai) OR (hanh va)) cua viet*".