Try this rather small macro:
Sub DataLocator()
Dim nA As Long, nB As Long, i As Long, j As Long, k As Long
Dim v As String
nA = Cells(Rows.Count, "A").End(xlUp).Row
nB = Cells(Rows.Count, "B").End(xlUp).Row
For i = 1 To nB
v = Cells(i, "B").Value
k = 3
For j = 1 To nA
If InStr(1, Cells(j, "A").Value, v) > 0 Then
Cells(i, k).Value = Cells(j, "A").Address(0, 0)
k = k + 1
End If
Next j
Next i
End Sub
For example:

Macros are very easy to install and use:
- ALT-F11 brings up the VBE window
- ALT-I
ALT-M opens a fresh module
- paste the stuff in and close the VBE window
If you save the workbook, the macro will be saved with it.
If you are using a version of Excel later then 2003, you must save
the file as .xlsm rather than .xlsx
To remove the macro:
- bring up the VBE window as above
- clear the code out
- close the VBE window
To use the macro from Excel:
- ALT-F8
- Select the macro
- Touch RUN
To learn more about macros in general, see:
http://www.mvps.org/dmcritchie/excel/getstarted.htm
and
http://msdn.microsoft.com/en-us/library/ee814735(v=office.14).aspx
Macros must be enabled for this to work!