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