I have two site collections inside the same web application; siteA & siteB. now inside siteA i want to display the latest items from siteB. i read a lot about cross-site query , and it seems that search core result web part can achieve this, but inside my publishing site (of type enterprise wiki) i can not find the "search core" web part inside the available web parts list. so can anyone adivce ? thanks
If you wanna display the latest items, i think you mean the Content Search Web Part. For this you need the enterprise license as it is not available to the foundation nor the standard edition.
If you have a Enterprise license, add it by activating the
Search-Driven content feature.
For the Search Results, refiners, advanced search box and the other related web parts, make sure that the feature
Search Server Web Parts and Templates are activated from the site collection features setting.