Try..
Sub Macro()
Dim varFound As Variant, varSearch As Variant, strAddress As String
varSearch = "Nr. Crt."
ActiveSheet.Range("A:J").Font.Bold = False
ActiveSheet.Range("A:J").Interior.ColorIndex = xlNone
With ActiveSheet.Columns(1)
Set varFound = .Find(varSearch, LookIn:=xlValues)
If Not varFound Is Nothing Then
strAddress = varFound.Address
Do
varFound.Resize(, 10).Font.Bold = True
varFound.Resize(, 10).Interior.ColorIndex = 6
Set varFound = .FindNext(varFound)
Loop While Not varFound Is Nothing And _
varFound.Address <> strAddress
End If
End With
End Sub
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