Calculated column w/ IF condition not showing the false value

Byking23 Try using formula like this: 

=IF(ISERROR(FIND("B11",[NCF])),0,[Col1])

Output: 

Note:

1. Sometimes comma( , ) does not work in formula (it is based on language or regional settings on your site). So in that case use semicolon( ; ) instead of comma( , ).
2. Use correct display name of your SharePoint columns in above formula.
3. Wrap column names inside [] if your column name has space in it. For example: [My Column Name].

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