Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
cham luc » cham soc, nhan luc, cham cuu
manh cua » doanh cua
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
ban cua » ban quan
luc va » duc va, tuc va, loc va
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: tu cac ky nang ((o hoi) or (x ho)). hieu vu cham luc va thanh ((manh cua) OR (ban cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((o hoi) OR (x ho)). hieu vu cham luc va thanh ((manh cua) OR (ban cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((o hoi) or (x ho)). hieu vu cham luc va thanh ((manh cua) OR (ban cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((o hoi) or (x ho)). hieu vu cham luc va thanh ((manh cua) OR (ban cua)) tre*.