Perhaps you should try some spelling variations:
can thuc » dan thuc, van thuc, cay thuc
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
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: tu sach v nang xa hoi. ((hieu ve) OR (hieu qua)) can thuc va hanh ((vi cua) OR (vai cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang xa hoi. ((hieu ve) or (hieu qua)) can thuc va hanh ((vi cua) OR (vai cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. ((hieu ve) or (hieu qua)) can thuc va hanh ((vi cua) OR (vai cua)) triet*.