Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
cau treo » cau theo, cau tren, cau triet
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
su sach » so sach, vu sach
xuc van » duc van, luc van, xuc ban
kem cau » ket cau, ke cau, kem chu
ve cam » ve cac, va cam, ve cai

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) OR (su sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh kem cau treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (su sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh kem cau treo~".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (su sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh kem cau treo*.