Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
thuc va » thuc vat, thuc dan, thuc day
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
cua tu » cua tuc, cua su, cua cu
qua » quan

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 xang xa hoi. hieu qua ap ((thuc va) or (hoc dan)) hanh di ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang xa hoi. hieu qua ap ((thuc va) OR (hoc dan)) hanh di ((cua tre) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: te sach ty xang xa hoi. hieu qua ap ((thuc va) or (hoc dan)) hanh di ((cua tre) or (cua tu))*.