Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
lai hoi » dai hoi, lai hoa, lai roi
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((ma hoi) OR (lai hoi)). hieu ve cam ((xuc va) OR (duc va)) hanh vai cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((ma hoi) OR (lai hoi)). hieu ve cam ((xuc va) OR (duc va)) hanh vai cua vat*.