Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
thu sach » tu sach, thuat sach, thuoc sach
danh vai » danh sai, danh va, doanh van
dang van » hoang van, hang va
sach tu » sach thu, cach tu, sach ty
tu tang » tuc tang, tu trang, tu tong
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
cuu tre » cua tre, cau tren, cau treo

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 tu tang xa hoi. hieu va pham duc va ((((danh vai) or (dang van))) or (doanh ban)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tu tang xa hoi. hieu va pham duc va ((((danh vai) OR (dang van))) OR (doanh ban)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: thu sach tu tang xa hoi. hieu va pham duc va ((((danh vai) or (dang van))) or (doanh ban)) cuu tre*.