Perhaps you should try some spelling variations:
lam thuc » lam thuoc, am thuc, nam thuc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
va lam » van lam, va lap
vi cua » vai cua, di cua
de cua » le cua, te cua, dieu cua

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 lang xa hoi. hieu va lam thuc va hanh ((vi cua) or (de cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu va lam thuc va hanh ((vi cua) OR (de cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu va lam thuc va hanh ((vi cua) or (de cua)) tre*.