Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu van » hieu va, thien van, lieu va
hanh tri » thanh tri, hanh tai, hanh triet
cua tre » cua te, cuu tre, cua triet
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
cam duc » cao duc, pham duc, nam duoc
su sai » su tai, su hai, su dai
sai ky » sac ky

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