Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cua triet » cua viet, su triet, va triet
hanh tri » thanh tri, hanh tai, hanh triet
hieu van » hieu va, thien van, lieu va
duc van » duc va, duc tan, duc manh
cao duc » dao duc, cao suc, giao duc
van cao » van dao, van bao, van hao
ky dang » ky danh
su sai » su tai, su hai, su dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ((ky dang) OR (ky nang)) xa hoi. hieu van cao duc van ((hanh tri) or (hanh trinh)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ((ky dang) OR (ky nang)) xa hoi. hieu van cao duc van ((hanh tri) OR (hanh trinh)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ((ky dang) OR (ky nang)) xa hoi. hieu van cao duc van ((hanh tri) or (hanh trinh)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su sai ((ky dang) OR (ky nang)) xa hoi. hieu van cao duc van ((hanh tri) or (hanh trinh)) cua triet*.