Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
doanh vi » doanh va, doan vi, doanh vien
nuoc san » nuoc luan, nguoi san, nuoc quan
nuoc van » nuoc va, luoc van, nuoc dan
van cap » van cau, van dap, van ca
te sach » toc sach
luy tre » luyen tre
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van 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 ((5 hoi) OR (o hoi)). hieu van cap ((nuoc van) OR (nuoc san)) doanh vi luy tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang ((5 hoi) or (o hoi)). hieu van cap ((nuoc van) OR (nuoc san)) doanh vi luy tre~".
• Adding a wildcard symbol may retrieve word variants: te sach v nang ((5 hoi) or (o hoi)). hieu van cap ((nuoc van) OR (nuoc san)) doanh vi luy tre*.