CONTAINS and wildcard

Is it a good idea to have multiple contains? I have this query:

Select * from myTable where contains (Col1, 'Africa') or (Col2, 'Africa')

Also, I tried this, didn't return anything:

Select * from myTable where contains (Col1, 'Africa*') or (Col2, 'Africa')

Both Col1 and Col2 has the string 'Africa' and 'African' in it.


--sharif
.