I have a problem with a KM C280 making a grinding noise on startup, so tried to search in that forum on "grinding", but the search goes over the whole site. I also tried adding "bizhub" to reduce the hits to the KM forum, but the search just seems to take the union of the two search terms rather than the intersection, even if I use "+" (as in "bizhub +grinding" or "+bizhub +grinding"). "Advanced" search seems to offer no way to do this. How can I refine the search?
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