Your list of user interface elements is good. Export, print (ask if this is really necessary for printing?), Category / tag and language selection are worth considering. Smart and working pagination (do not forget to order).
Please do not force the search to open in a new one (or, even worse, always in the same window). Search results links must be sliding (always use GET)
But itβs really important to have a functional (i.e. really good) algorithm. Mostly on google sites, because their search engine, coughing, is everywhere. You are looking for a function diagram, technical specifications, price, etc., Not interested in press releases and vica-versa.
Search engine providers offer integration into company websites.
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