Ftsearch results differ with 'or' in user input

I’m trying to build a search form that has a text field for user input to create a query. The user should enter a town name and this will then look at the field (Line5) containing this data - or at least that’s what I was thinking it did. Example - user enters TownA and results are returned with all docs that have TownA in the specified field. So far so good. but if the user enters ‘or’ in the text field i.e. TownA or TownB, the results return not only TownA and TownB records for the specified field but also any records that have TownA in another field such as the Company Name e.g. TownA Engineering. I haven’t come across anything in any of my searches that can explain this. Can anybody shed any light? Here is the code -

Dim session As New NotesSession

Dim db As NotesDatabase

Dim view As NotesView

Dim view2 As NotesView

Dim vc As NotesViewEntryCollection

Dim v2 As NotesViewEntryCollection



Dim doc As NotesDocument



Set db = session.CurrentDatabase



Set view2 = db.GetView("searchresults")

Set v2 = view2.AllEntries

Call v2.RemoveAllFromFolder("searchresults")



Dim ws As New NotesUIWorkspace

Dim uidb As NotesUIDatabase

Dim uidoc As NotesUIDocument

Set uidoc = ws.CurrentDocument





Set doc = uidoc.Document

query$=doc.Query(0)

querysec1$=doc.Sector1(0)

querysec2$=doc.Sector2(0)



Messagebox query$

Messagebox querysec1$

Messagebox querysec2$





Set view = db.GetView("SearchBA3")

Set vc = view.AllEntries



If query$ <> "" Then

	Call vc.FTSearch( ("FIELD Line5 CONTAINS " & query$ ), 0)

End If

If querysec1$ <> "" Then

	Call vc.FTSearch( ("FIELD Sector1 CONTAINS " & querysec1$ ), 0)

End If

If querysec2$ <> "" Then

	Call vc.FTSearch( ("FIELD Sector2 CONTAINS " & querysec2$ ), 0)

End If	



Call vc.PutAllInfolder("searchresults")



If vc.Count > 0 Then

	Set uidb = ws.CurrentDatabase

	Call uidb.OpenView("searchresults", , True)

	Call uiDoc.FieldSetText("SaveOptions", "0")

	Call uidoc.Close(True)

Else

	Messagebox "No results found"

End If

End Sub