Perhaps you should try some spelling variations:
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien
ve triet » va trien
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luc van » luoc van, luu van, duc van
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
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: tu sai ky nang x hoi. hieu va nhan luc van hanh vi ((va thiet) or (((su triet) or (ve triet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang x hoi. hieu va nhan luc van hanh vi ((va thiet) OR (((su triet) OR (ve triet)))).
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang x hoi. hieu va nhan luc van hanh vi ((va thiet) or (((su triet) or (ve triet))))*.