Perhaps you should try some spelling variations:
hanh than » hanh han, hanh nhan, hanh phan
than cua » nhan cua, thai cua, ban cua
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
ky dang » ky nang
ky danh » ky anh
hieu ve » hieu va, hieu van
cam duc » cao duc, pham duc, nam duoc
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 danh)) xa hoi. hieu ve ((cam duc) or (cam xuc)) ban hanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ((ky dang) OR (ky danh)) xa hoi. hieu ve ((cam duc) OR (cam xuc)) ban hanh than cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ((ky dang) OR (ky danh)) xa hoi. hieu ve ((cam duc) or (cam xuc)) ban hanh than cua tre".
• Adding a wildcard symbol may retrieve word variants: su sai ((ky dang) OR (ky danh)) xa hoi. hieu ve ((cam duc) or (cam xuc)) ban hanh than cua tre*.