Perhaps you should try some spelling variations:
slash » flash, slas
clash » flash, crash
sath » saith, sathi, path
sathe » saithe, sathie, pathe, satze, sache, mathe
sweat » swept
sweet » sheet
spate » spater, spaten, space
-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: ((slash OR (clash OR class)) OR (((sath OR sathe) OR (sweat OR sweet)) OR spate))-plate.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((slash or (clash or class)) or (((sath OR sathe) or (sweat or sweet)) or spate))-plate".
• Adding a wildcard symbol may retrieve word variants: ((slash or (clash or class)) or (((sath OR sathe) or (sweat or sweet)) or spate))-plate*.