Perhaps you should try some spelling variations:
luyen tre » luyen tri, huyen tren, tuyen tren
luat tri » luat thi, luat thai, quan tri
va doan » va doanh, van doan, va dan
te sach » toc sach
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
doan vi » doan va, don vi, doan thi
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang x hoi. hieu ve cac luc va doan vi ((luat tri) or (((luy tre) or (luyen tre))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ve cac luc va doan vi ((luat tri) OR (((luy tre) OR (luyen tre)))).
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ve cac luc va doan vi ((luat tri) or (((luy tre) or (luyen tre))))*.