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