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