Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
dang xay » dang van, van xay
ta doanh » va doanh, te doanh, ty doanh
dan cua » dan ca, ban cua, dai cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van cac » van hac, van cau, van bac
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
toc ta » toc tay, toc thai
cua te » cua tu

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: te sach ky dang xay hoi. hieu ((van cac) OR (((van chat) OR (cao chat)))) toc ta doanh dan cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xay hoi. hieu ((van cac) or (((van chat) OR (cao chat)))) toc ta doanh dan cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xay hoi. hieu ((van cac) or (((van chat) OR (cao chat)))) toc ta doanh dan cua te*.