Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
suc van » su van, duc van, luc van
cua tre » cua te, cuu tre, dua tren
va cao » va cac, va co, va dao

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) or (su sach)) ky nang xa hoi. hieu va cao suc van hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (su sach)) ky nang xa hoi. hieu va cao suc van hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (su sach)) ky nang xa hoi. hieu va cao suc van hanh vi ((cua tre) or (cua triet))*.