Perhaps you should try some spelling variations:
slash » flash, clash, slas
sweath » sheath, sweat, sweats
swat » sweat, swan, stat
seat » set, seit, sea
sat » salt, satz
spat » span, spot, spam
-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: ((smash OR slash) OR ((sweath OR ((swat OR seat) OR sat)) OR spat))-plate.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((smash or slash) or ((sweath or ((swat OR seat) or sat)) or spat))-plate".
• Adding a wildcard symbol may retrieve word variants: ((smash or slash) or ((sweath or ((swat OR seat) or sat)) or spat))-plate*.