Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
nam thuc » nam thuoc, am thuc, nam thu
lang xa » lang ha, dang xay, lang van
hieu ca » hieu cac, hieu cua, hieu va
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
ca nam » cua nam, cai nam, ha nam
ca dan » cac dan, ca dao
va dao » ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach _ lang xa hoi. hieu ca nam thuc ((ca dan) or (va dao)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach _ lang xa hoi. hieu ca nam thuc ((ca dan) OR (va dao)) vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach _ lang xa hoi. hieu ca nam thuc ((ca dan) or (va dao)) vai cuu tre*.