Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
thai cua » than cua, tai cuc, tri cua
te sach » toc sach
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hieu ve » hieu van
xang xa » lang xa, mang xa, ang xa
luc va » duc va, tuc va, loc va

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: te sach ty xang xa hoi. ((hieu ve) OR (hieu va)) cham luc va hanh ((thai cua) OR (lai cua)) tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty xang xa hoi. ((hieu ve) OR (hieu va)) cham luc va hanh ((thai cua) or (lai cua)) tu~".
• Adding a wildcard symbol may retrieve word variants: te sach ty xang xa hoi. ((hieu ve) OR (hieu va)) cham luc va hanh ((thai cua) or (lai cua)) tu*.