Perhaps you should try some spelling variations:
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
hanh ve » hanh va, hanh kem
hanh de » hanh kem
cua tre » cua te, cuu tre, cua triet
cao tuc » dao tuc, cao duc, cao suc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
va cao » va cac, va co, va dao
tuc va » thuc va, truc va, tuc xa

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