Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cau tren » cu tren, dau tren, ca tren
cau theo » cau thi, cau tao
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
anh kem » hanh kem, anh kiem, banh kem
tam luu » ta luu, tam buu
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: toc sach y nang x hoi. hieu ve ((cam luu) OR (tam luu)) van anh kem ((cau tren) OR (cau theo))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang x hoi. hieu ve ((cam luu) OR (tam luu)) van anh kem ((cau tren) or (cau theo))~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang x hoi. hieu ve ((cam luu) OR (tam luu)) van anh kem ((cau tren) or (cau theo))*.