Perhaps you should try some spelling variations:
tham hoc » thai hoc, tham hoa, than hoc
ban hang » ngan hang
thai cua » than cua, tai cuc, tri cua
so sach » so sanh, bo sach, co sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
hoc ban » hoc bang, hoc dan, hoc bai
hai cua » dai cua, hoi cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach _ lang xa hoi. hieu va tham hoc ban hang ((hai cua) or (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach _ lang xa hoi. hieu va tham hoc ban hang ((hai cua) OR (thai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: so sach _ lang xa hoi. hieu va tham hoc ban hang ((hai cua) or (thai cua)) tre*.