Perhaps you should try some spelling variations:
thuoc sac » thuoc sach, thuoc dac, thuoc sai
hieu van » hieu va, thien van, lieu va
van nhan » van phan, van thanh, danh nhan
nhan luc » nang luc
ban hanh » ban hang
va triet » va thiet, va trien, ve triet
su triet » su viet, ve triet
nang xa » nang x, lang xa, nang ma
luc ban » duc ban, cuc ban, luc bat
su tien » su kien, su hien, tu tieng
sac ky » cac ky, sai ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sac ky nang xa hoi. hieu van nhan luc ban hanh vi ((va triet) or (((su triet) or (su tien))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sac ky nang xa hoi. hieu van nhan luc ban hanh vi ((va triet) OR (((su triet) OR (su tien)))).
• Adding a wildcard symbol may retrieve word variants: thuoc sac ky nang xa hoi. hieu van nhan luc ban hanh vi ((va triet) or (((su triet) or (su tien))))*.