Perhaps you should try some spelling variations:
nang cham » trang cham, nang cao, nang phat
thi nang » thi cong, ki nang, thi hanh
hanh van » thanh van, khanh van, hanh san
cham luc » cham soc, nhan luc, cham cuu
hanh va » hang va, hanh vi
bo sach » co sach, hoc sach
ca tren » cau tren, cu tren, la tren
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach y nang ((x hoi) or (o hoi)). thi nang cham luc va ((hanh van) or (hanh va)) ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y nang ((x hoi) OR (o hoi)). thi nang cham luc va ((hanh van) OR (hanh va)) ca tren.
• Adding a wildcard symbol may retrieve word variants: bo sach y nang ((x hoi) or (o hoi)). thi nang cham luc va ((hanh van) or (hanh va)) ca tren*.