Perhaps you should try some spelling variations:
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua
va am » va lam, va cam

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) ((nang xa) OR (van xay)) hoi. lieu va am thuc va dan vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach y)) ((nang xa) or (van xay)) hoi. lieu va am thuc va dan vi cua tre*.