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Search using multiple publication numbers does not seem to be working.
As an example a search using the below string returns zero results; it was working just fine earlier. I have been facing this problem for the past one week.
WO:(WO2014162067 or WO2014162066 or WO2014162167 or WO2014163329 or WO2014163327 or WO2014162769 or WO2014157790 or WO2014163321)
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