Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
thu sach » tu sach, thuat sach, thuoc sach
thu bang » thu ban, thu hang, thu trang
chu bang » chuc nang, chu quang, chu trang
va doanh » van doanh, vay doanh, va danh
ban cua » ban quan
qua cam » qua cham, qua ca, qua cai
qua cac » cua cac
cua te » cua tu
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((thu bang) OR (chu bang)) xa hoi. hieu ((qua cam) or (qua cac)) xuc va doanh ban cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((thu bang) OR (chu bang)) xa hoi. hieu ((qua cam) OR (qua cac)) xuc va doanh ban cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((thu bang) OR (chu bang)) xa hoi. hieu ((qua cam) or (qua cac)) xuc va doanh ban cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((thu bang) OR (chu bang)) xa hoi. hieu ((qua cam) or (qua cac)) xuc va doanh ban cua te*.