Perhaps you should try some spelling variations:
slash » flash, clash, seash, sash, suash
slas » seas, sas, suas
slabs » slab
sath » sathe, saith, sathi
sweat » sweet, swept
spate » spater, space, spite
spaten » spatern, spacen, spiten, spater, spateren
-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 (slas OR slabs)) OR ((sath OR sweat) OR (spate OR spaten)))-plate.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((slash or (slas or slabs)) or ((sath or sweat) or (spate OR spaten)))-plate".
• Adding a wildcard symbol may retrieve word variants: ((slash or (slas or slabs)) or ((sath or sweat) or (spate OR spaten)))-plate*.