Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » lieu va, hieu qua
cao duc » dao duc, giao duc, tao duoc
cao suc » cao su
va dung » van dung, va duong, vat dung
tai cua » thai cua, tai cuc, tri cua
y nang » ky nang, ly nang, v nang
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang x hoi. hieu va ((cao duc) or (cao suc)) va dung tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu va ((cao duc) OR (cao suc)) va dung tai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu va ((cao duc) or (cao suc)) va dung tai cua te*.