Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
cua te » cua tu

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: thu sach y nang xa hoi. ((hieu ve) OR (hieu va)) cac duc ((va hanh) OR (va danh)) vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. ((hieu ve) or (hieu va)) cac duc ((va hanh) OR (va danh)) vai cua te~".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. ((hieu ve) or (hieu va)) cac duc ((va hanh) OR (va danh)) vai cua te*.