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