Perhaps you should try some spelling variations:
phat luc » nhan luc, phat huy, chat lua
van hanh » van thanh, ban hanh, van anh
va trien » va truyen, va thiet, va tuyen
hieu va » lieu va, hieu qua
luc van » luoc van, luu van, duc van
su tien » su kien, su hien, tu tieng
sac ky » sai 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 ((sac ky) or (cac ky)) nang x hoi. hieu va phat luc van hanh vi ((va trien) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang x hoi. hieu va phat luc van hanh vi ((va trien) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) nang x hoi. hieu va phat luc van hanh vi ((va trien) or (su tien))*.