Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh vi » doanh va, doan vi, doanh vien
nuoc van » nuoc va, nuoc san, luoc van
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
te sach » toc sach
luy tre » luyen tre
va nang » van nang, da nang, cam nang
v nang » vu nang, van nang, voi nang
vi luy » vi lua, vi luu
o hoi » co hoi, o hoc, o hai

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 ((v nang) OR (va nang)) ((5 hoi) OR (o hoi)). lieu va cac nuoc van doanh vi luy tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((v nang) OR (va nang)) ((5 hoi) or (o hoi)). lieu va cac nuoc van doanh vi luy tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) OR (va nang)) ((5 hoi) or (o hoi)). lieu va cac nuoc van doanh vi luy tre*.