Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
vai cua » dai cua, hai cua, lai cua
co loi » co hoi
ve cam » ve cham, ve cac, va cam
vi 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: su sach ty nang ((co hoc) OR (co loi)). hieu ve cam xuc van thanh ((vi cua) OR (vai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang ((co hoc) or (co loi)). hieu ve cam xuc van thanh ((vi cua) OR (vai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ((co hoc) or (co loi)). hieu ve cam xuc van thanh ((vi cua) OR (vai cua)) tre*.