Perhaps you should try some spelling variations:
nang bac » bang bac, nang ban, dang bac
thi nang » thi cong, ki nang, thi hanh
hanh tri » thanh tri, hanh tai, hanh trinh
so sach » so sanh, bo sach, co sach
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang o hoi. thi nang bac ((xuc van) or (luc van)) hanh tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang o hoi. thi nang bac ((xuc van) OR (luc van)) hanh tri cua te.
• Adding a wildcard symbol may retrieve word variants: so sach y nang o hoi. thi nang bac ((xuc van) or (luc van)) hanh tri cua te*.