Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh dai » hanh tai, hanh dao, vanh dai
cau luc » cau truc, cau phuc
ty hang » ty xang, thi hang, thu hang
va hanh » van hanh, va thanh, va danh
ly hang » ly quang
xay hoi » tay hoi, cay phoi, gay thoi
luc va » duc va, tuc va, loc va
cua te » cua tu
va cau » van cau, va cac, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ty hang) OR (ly hang)) ((xay hoi) or (xa hoi)). lieu va cau luc va hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty hang) OR (ly hang)) ((xay hoi) OR (xa hoi)). lieu va cau luc va hanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty hang) OR (ly hang)) ((xay hoi) or (xa hoi)). lieu va cau luc va hanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty hang) OR (ly hang)) ((xay hoi) or (xa hoi)). lieu va cau luc va hanh dai cua te*.