Perhaps you should try some spelling variations:
hanh dao » thanh dat, thanh dam, doanh dao
hanh dai » hanh tai, vanh dai, thanh dat
cac thuc » cach thuc, cac thu, can thuc
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
cua tre » cua te, cuu tre, cua triet

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 tu nang xa hoi. hieu va cac thuc va ((hanh dai) or (((hanh dao) OR (lanh dao)))) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang xa hoi. hieu va cac thuc va ((hanh dai) OR (((hanh dao) OR (lanh dao)))) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu va cac thuc va ((hanh dai) or (((hanh dao) OR (lanh dao)))) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu va cac thuc va ((hanh dai) or (((hanh dao) OR (lanh dao)))) cua tre*.