Perhaps you should try some spelling variations:
te sach » toc sach
cao tuc » dao tuc, cao duc, cao suc
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
nang xa » lang xa, nang ma, mang xa
va cao » va cac, va co, va dao
tuc va » thuc va, truc va, tuc xa
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 ty ((nang xa) OR (nang x)) hoi. hieu va cao tuc va ((hanh kem) or (hanh vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (nang x)) hoi. hieu va cao tuc va ((hanh kem) OR (hanh vi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) OR (nang x)) hoi. hieu va cao tuc va ((hanh kem) or (hanh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) OR (nang x)) hoi. hieu va cao tuc va ((hanh kem) or (hanh vi)) cua te*.