Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
cau xuc » cam xuc, cau luc, cau truc
xuc van » duc van, luc van, vuc van
hanh ca » hanh cac, hanh cat, hanh cua
nang o » nang co, nang ho, nang ro
va cau » van cau, va cac, va dau
ca cua » co cua
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (vu sach)) ky nang o hoi. lieu va cau xuc van hanh ca cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (vu sach)) ky nang o hoi. lieu va cau xuc van hanh ca cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (vu sach)) ky nang o hoi. lieu va cau xuc van hanh ca cua te*.