Perhaps you should try some spelling variations:
hanh di » hanh de, hang di, danh di
thuc va » thuc vat, thuc dan, thuc day
sach ky » sach y, sach ty, sach kem
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
ve am » va am

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) or (sac ky)) lang xa hoi. hieu ve am thuc va ((hanh di) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sac ky)) lang xa hoi. hieu ve am thuc va ((hanh di) OR (hanh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) or (sac ky)) lang xa hoi. hieu ve am thuc va ((hanh di) or (hanh vi)) cua tre*.