Perhaps you should try some spelling variations:
doanh dao » doanh cao, doanh giao, doanh duoc
doanh bat » danh bat, doanh tai, doanh va
doanh bao » doanh ban, doanh bac, doanh cao
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cac toc » cac toi, cac nuoc, cac thoi
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
toc va » hoc va, toc ta, tuc va
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 tang xa hoi. hieu va cac toc va ((doanh dao) OR (((doanh bao) OR (doanh bat)))) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang xa hoi. hieu va cac toc va ((doanh dao) or (((doanh bao) OR (doanh bat)))) cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang xa hoi. hieu va cac toc va ((doanh dao) or (((doanh bao) OR (doanh bat)))) cua te*.