Perhaps you should try some spelling variations:
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
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
cua te » cua tu

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 ly nang xa 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 ly nang xa hoi. hieu va ((cao duc) OR (cao suc)) va dung tai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ly nang xa hoi. hieu va ((cao duc) or (cao suc)) va dung tai cua te*.