Perhaps you should try some spelling variations:
ban hanh » ban hang
hanh tai » thanh tai, hang tai, han tai
hieu ve » hieu va, hieu van
cam duc » cam xuc, pham duc, nam duoc
cao duc » dao duc, cao suc, giao duc
tai cua » thai cua, tai cuc, tri cua
tu van » tu va
co hai » co dai, co hoi, o hai
cua cu » cua chu, cua cau, cua su
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu van ky nang ((x hoi) or (co hai)). hieu ve ((cam duc) OR (cao duc)) ban hanh tai cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu van ky nang ((x hoi) OR (co hai)). hieu ve ((cam duc) OR (cao duc)) ban hanh tai cua cu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu van ky nang ((x hoi) or (co hai)). hieu ve ((cam duc) OR (cao duc)) ban hanh tai cua cu*".