Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
sang lap » sang tao, sang ma, sang tai
hang tai » hang va, dung tai
danh vai » danh sai, danh va, dang van
bo sach » co sach, hoc sach
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
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: bo sach ky ((sang lap) or (hang tai)) hai. hieu ve cam xuc va ((danh vai) OR (doanh van)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky ((sang lap) OR (hang tai)) hai. hieu ve cam xuc va ((danh vai) OR (doanh van)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ky ((sang lap) or (hang tai)) hai. hieu ve cam xuc va ((danh vai) OR (doanh van)) cua te".
• Adding a wildcard symbol may retrieve word variants: bo sach ky ((sang lap) or (hang tai)) hai. hieu ve cam xuc va ((danh vai) OR (doanh van)) cua te*.