Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
thu sach » thuat sach, thuoc sach, thu hoach
va doanh » van doanh, vay doanh, va danh
van cua » vang cua, ban cua, dan cua
hieu ve » hieu va, hieu van
tang ma » tang van
tu sach » su sach, te sach, tu cach
ve cam » ve cham, ve cac, va cam
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) OR (tu sach)) y ((tang ma) or (mang may)) hoi. hieu ve cam xuc va doanh van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) y ((tang ma) OR (mang may)) hoi. hieu ve cam xuc va doanh van cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) y ((tang ma) or (mang may)) hoi. hieu ve cam xuc va doanh van cua te*".