Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cua triet, dua tren
dinh va » dinh van, dinh ve, tinh va
cuu tre » cau tren, cau treo
thuc va » thuc vat, thuc dan
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
va am » va lam, va cam

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 ky lang xa hoi. hieu va am ((thuc va) or (thuc day)) dinh va ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu va am ((thuc va) OR (thuc day)) dinh va ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu va am ((thuc va) or (thuc day)) dinh va ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu va am ((thuc va) or (thuc day)) dinh va ((cua tre) OR (cuu tre))*.