Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
tu sach » thu sach, su sach, te sach
hang di » hang doi, hang vi, hang dien
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
thuc va » thuc vat, thuc dan
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ve cac » va cac, vien cac
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 lang xa hoi. hieu ve cac ((thuc va) or (thuc day)) hang di ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu ve cac ((thuc va) OR (thuc day)) hang di ((cua te) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu ve cac ((thuc va) or (thuc day)) hang di ((cua te) or (cuu tre))*.