Perhaps you should try some spelling variations:
qua nang » sua nang, cua nang, qua hang
van hanh » van thanh, ban hanh, van anh
va trien » va truyen, va thiet, va tuyen
su triet » su viet, su tien, ve triet
luc van » luoc van, luu van, duc van
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
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 sac ky nang o hoi. hieu qua nang luc van hanh vi ((va trien) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang o hoi. hieu qua nang luc van hanh vi ((va trien) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang o hoi. hieu qua nang luc van hanh vi ((va trien) or (su triet))*.