Perhaps you should try some spelling variations:
awash » wash, akash, arash
slas » slabs, sas, suas
seas » sets, sea, ses
swath » spath, sweath, swanh, sath
swat » sweat, swan, sat
span » spin
-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: ((awash OR (slas OR seas)) OR (swath OR (swat OR span)))-plate*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((awash or (slas OR seas)) or (swath or (swat or span)))-plate*".