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