Perhaps you should try some spelling variations:
hang doi » hang di, hang loi, huong doi
su sach » so sach, vu sach
doi cua » dai cua, hoi cua
va hang » van hang, va nang, va lang
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
bo sach » co sach, hoc sach
he nam » ha nam, nghe nam
te nam » tu nam, tw nam, le nam

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) or (bo sach)) ky lang xa hoi. hieu ((te nam) or (he nam)) thuc va hang doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (bo sach)) ky lang xa hoi. hieu ((te nam) OR (he nam)) thuc va hang doi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (bo sach)) ky lang xa hoi. hieu ((te nam) or (he nam)) thuc va hang doi cua tre*.