Perhaps you should try some spelling variations:
trong van » trong cac
tang van » dang van, hoang van, tang luan
tham xuc » tham nuoc, tham thuc, pham duc
so sach » so sanh, bo sach, co sach
va tham » van tham, va cham, va thanh
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
xuc va » duc va, tuc va, luc va
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: so sach thieu ((tang van) OR (trong van)) hoe. lieu va tham xuc va hanh ((vi cua) OR (vai cua)) tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thieu ((tang van) or (trong van)) hoe. lieu va tham xuc va hanh ((vi cua) OR (vai cua)) tu~".
• Adding a wildcard symbol may retrieve word variants: so sach thieu ((tang van) or (trong van)) hoe. lieu va tham xuc va hanh ((vi cua) OR (vai cua)) tu*.