Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, xuc ban
ma hoi » mai hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang ((ma hoi) OR (xa hoi)). hieu ve cam xuc van hanh vi cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang ((ma hoi) OR (xa hoi)). hieu ve cam xuc van hanh vi cua vat~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang ((ma hoi) OR (xa hoi)). hieu ve cam xuc van hanh vi cua vat*.