Perhaps you should try some spelling variations:
lam thuc » lam thuoc, am thuc, nam thuc
thuc dan » thuc hanh, hoc dan, thuc vat
dan tinh » doan tinh, dang tinh, dan trinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
tinh va » tich va, trinh van, trinh vat
cua tre » cuu tre, cua triet, dua tren
va lam » van lam, va lap
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: tu sach ky ((nang xa) or (nang x)) hoi. lieu va lam thuc dan tinh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang x)) hoi. lieu va lam thuc dan tinh va ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang x)) hoi. lieu va lam thuc dan tinh va ((cua tre) or (cua te))*.