Perhaps you should try some spelling variations:
chat thuc » thuat thuc, nhan thuc, chat thai
hieu cao » chieu cao, hieu cac, hieu ca
danh dai » danh dau, danh di, vanh dai
danh sai » dung sai, danh bat, danh dau
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
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet

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