Perhaps you should try some spelling variations:
swash » slash, smash, awash
slas » slabs, seas, sas
swath » swat, spath
spat » span, spot, spant
spa » span
spam » spanm, span
-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: ((swash OR slas) OR (swath OR ((spat OR spa) OR spam)))-plate*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((swash or slas) or (swath or ((spat OR spa) or spam)))-plate*".