Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
ke cau » ket cau
de cua » le cua, te cua, dieu cua
loc va » hoc va, luc va
cua tu » cua tuc, cua su, cua cu
ve cau » va cau, ve cac, le cau
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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) OR (toc sach)) y nang x hoi. hieu ((ve cau) OR (ke cau)) loc va hanh de cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y nang x hoi. hieu ((ve cau) or (ke cau)) loc va hanh de cua tu~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y nang x hoi. hieu ((ve cau) or (ke cau)) loc va hanh de cua tu*.