Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cau tren » cu tren, dau tren, ca tren
danh vai » danh sai, danh va, dang van
cham xuc » cam xuc, chat xuc, cham soc
trang va » tran van, hang va
ke trang » ke toan
hieu va » lieu va, hieu qua
va cham » va chat, va tham
sach ke » sach kem, sach de, sach che
tu sach » thu sach, su sach, te sach
va hoi » xa hoi, va hoc, va hoa
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ke trang va hoi. hieu va cham xuc va ((danh vai) or (doanh van)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ke trang va hoi. hieu va cham xuc va ((danh vai) OR (doanh van)) cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ke trang va hoi. hieu va cham xuc va ((danh vai) or (doanh van)) cau tren*.