If you select one or more items in the slicer the data shown to you is filtered by OR condition between all the selections. It would be really useful if we can change this to AND condition as well.
Example:
If you have items which are tagged with some tags and you want to find all items which include ALL of the tags or ONE of the tags, you would simply put all the tags in the slicer and change between AND and OR condition.
I posted an idea for this feature on ideas.powerbi.com. Please vote here if you also need these functioanlity:
https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/16317157-slicer-and-or-functionality
If you know how this can be achived in any other way please let me know.