Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
sach thue » sach thieu, sach tham, cach thuc
sach thu » sach thieu, sach tham, cach thuc
va doanh » van doanh, vay doanh, va danh
van cua » vang cua, ban cua, dan cua
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
hieu vu » hieu va, hieu su, dieu vu
xuc va » duc va, tuc va, luc va
ban xa » ban va, ban ma, ban da

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) OR (sach thue)) ban xa hoi. ((hieu vu) or (hieu ve)) cam xuc va doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach thu) OR (sach thue)) ban xa hoi. ((hieu vu) OR (hieu ve)) cam xuc va doanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach thu) OR (sach thue)) ban xa hoi. ((hieu vu) or (hieu ve)) cam xuc va doanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach thu) OR (sach thue)) ban xa hoi. ((hieu vu) or (hieu ve)) cam xuc va doanh van cua tre*.