Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh te » hanh tu, hanh ve, hanh de
cua tuc » cua duc, cua tu, cua thuoc
ve cac » va cac, vien cac
ke cau » ket cau
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va
loc va » hoc va
te cua » tue cua, le cua, de cua
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: toc sach y nang x hoi. hieu ((ve cac) OR (ke cau)) ((luc va) OR (loc va)) hanh te cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang x hoi. hieu ((ve cac) or (ke cau)) ((luc va) OR (loc va)) hanh te cua tuc~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang x hoi. hieu ((ve cac) or (ke cau)) ((luc va) OR (loc va)) hanh te cua tuc*.