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