Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
tru nang » tra nang, tri nang, cuu nang
danh lai » danh sai, gianh lai, dinh lam
thi nang » thi cong, ki nang, thi hanh
cau luc » cau truc, cau phuc
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
qua cau » quan cau, qua cac, qua ca
luc va » duc va, tuc va, loc va
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((((tru nang) OR (thi nang))) or (truc nano)) x hoi. hieu qua cau luc va danh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((((tru nang) OR (thi nang))) OR (truc nano)) x hoi. hieu qua cau luc va danh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((((tru nang) OR (thi nang))) or (truc nano)) x hoi. hieu qua cau luc va danh lai cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((((tru nang) OR (thi nang))) or (truc nano)) x hoi. hieu qua cau luc va danh lai cua te*.