Perhaps you should try some spelling variations:
dat khanh » van khanh, duy khanh
nam thuc » nam thuoc, am thuc, nam thu
thuc dat » thuc vat, thuc dan, thuc day
khanh vi » hanh vi, khanh v, nhanh vi
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty mang » ty xang, ty hang, tin mang
mang xa » lang xa, mang may, dang xay
va nam » van nam, ha nam, va nay
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty mang xa hoi. lieu va nam thuc dat khanh vi ((cua tu) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty mang xa hoi. lieu va nam thuc dat khanh vi ((cua tu) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty mang xa hoi. lieu va nam thuc dat khanh vi ((cua tu) or (cua cu))*.