Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
va doanh » van doanh, vay doanh, va danh
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
van cua » vang cua, ban cua, dan cua
hieu va » hieu qua
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu nang ma hoi. ((((hieu ve) OR (hieu va))) OR (lieu va)) cham xuc va doanh van cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach thu nang ma hoi. ((((hieu ve) or (hieu va))) or (lieu va)) cham xuc va doanh van cua tre*.