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
luu van » cuu van, luan van, luu hanh
duc van » duc va, duc tan, duc manh
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 nhan ((luu 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 sai ky nang x hoi. hieu va nhan ((luu van) OR (duc van)) hanh vi ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang x hoi. hieu va nhan ((luu van) or (duc van)) hanh vi ((va triet) or (su triet))*.