Perhaps you should try some spelling variations:
hanh cua » manh cua, hang cua, hanh sua
va triet » va trien, ve triet, cua triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
loc va » hoc va
sac ky » cac ky, sai ky
luc va » duc va, tuc va
ve co » vo co, va co, de co
thiet » thieu

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 ve co ((loc va) OR (luc va)) hanh cua ((va triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu ve co ((loc va) OR (luc va)) hanh cua ((va triet) OR (va thiet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu ve co ((loc va) OR (luc va)) hanh cua ((va triet) or (va thiet))".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu ve co ((loc va) OR (luc va)) hanh cua ((va triet) or (va thiet))*.