Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
cam luc » cam xuc, cau luc
le lang » le tang, le dang, le xang
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
hieu va » hieu qua
sach le » cach le, sach de, sach lo
luc va » duc va, tuc va, loc va
cua te » cua tu
ha hoi » hoa hoi, ha noi, va hoi

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 le lang ((ha hoi) OR (xa hoi)). ((hieu va) or (lieu va)) cam luc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach le lang ((ha hoi) OR (xa hoi)). ((hieu va) OR (lieu va)) cam luc va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach le lang ((ha hoi) OR (xa hoi)). ((hieu va) or (lieu va)) cam luc va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach le lang ((ha hoi) OR (xa hoi)). ((hieu va) or (lieu va)) cam luc va hanh vai cua te*.