Perhaps you should try some spelling variations:
danh hoi » danh hoa, danh hoc, dang khoi
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
dan hoi » dan hoc, dai hoi, van hoi
cua tuc » cua duc, cua tu, cua thuoc
co hoi » co hoc, co loi
ve cac » va cac, vien cac
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 cac ky nang ((x hoi) or (co hoi)). hieu ve cac duc va ((danh hoi) or (dan hoi)) cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((x hoi) OR (co hoi)). hieu ve cac duc va ((danh hoi) OR (dan hoi)) cua tuc.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((x hoi) or (co hoi)). hieu ve cac duc va ((danh hoi) or (dan hoi)) cua tuc*.