Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tri » thanh tri, hanh tai, hanh triet
duc manh » suc manh, duc anh, duc minh
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
cao duc » dao duc, cao suc, giao duc
van cao » van dao, van bao, van hao
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
su hai » su tai
su sai » su tai, su dai, su mai

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

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