Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
doanh van » doan van, doanh va, doanh ban
sach thu » sach thieu, sach tham, cach thuc
va doanh » van doanh, vay doanh, va danh
bang xa » lang xa, bang va, mang xa
hieu va » lieu va, hieu qua
van cua » vang cua, ban cua, dan cua
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
cua te » cua tu

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)) bang xa hoi. hieu va cam xuc va doanh van cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach thu) OR (sach thue)) bang xa hoi. hieu va cam xuc va doanh van cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sach thu) OR (sach thue)) bang xa hoi. hieu va cam xuc va doanh van cua te*.