Perhaps you should try some spelling variations:
swash » slash, swath, smash
slas » seas, sas, suas
slabs » slab
swat » sat, seat, stat
sleath » sheath, sleeth, sneath
sweat » sweet
swept » sweet
swan » san, span
-plate » -plates, -place

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((swash OR (slas OR slabs)) OR ((swat OR sleath) OR ((sweat OR swept) OR swan)))-plate.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((swash or (slas OR slabs)) or ((swat or sleath) or ((sweat or swept) or swan)))-plate".
• Adding a wildcard symbol may retrieve word variants: ((swash or (slas OR slabs)) or ((swat or sleath) or ((sweat or swept) or swan)))-plate*.