Perhaps you should try some spelling variations:
hien cac » thien cac, hieu cac, dien cac
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
hop van » hoc van, ho van, hoa van
hanh ve » hanh vi, hanh va, hanh kem
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve ve » de ve, va ve, ke ve

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

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