Perhaps you should try some spelling variations:
hanh dao » lanh dao, thanh dat, thanh dam
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, cua triet
sang xa » song xa, lang xa, sang ma
hieu va » lieu va, hieu qua
lam xuc » cam xuc, lam duoc
xuc van » duc van, luc van, vuc van
va lam » van lam, va lap
thiet » thieu

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 (toc sach)) _ sang xa hoi. hieu va lam xuc van hanh dao ((cua tre) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) _ sang xa hoi. hieu va lam xuc van hanh dao ((cua tre) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) _ sang xa hoi. hieu va lam xuc van hanh dao ((cua tre) or (va thiet))*.