The use of groups for organizing the library

It would help very much, if it would be possible to use the groups as filter. I would prefer that I can click on multiple groups to filter papers. For instance, I group set with different groups, each refering to a specific research design. For instance, one group includes only papers that apply case study research. Then, I have another group set, where I have groups according to topics, such as “Absorptive capacity”. 

Now, lets assume I seach for a paper that uses case study research for analyzing absorptive capacity. Then I would prefer to be able to click on both groups, so that I get the papers that fit both critieria.