Ioannis - a short answer would be 'yes'. Mixed method approaches can be adopted to fulfil combined approaches to single studies. The attached chapter may assist.
I'd say that a research like this would be exploratory first and explanatory later. This actually sounds a lot like a regular exploratory study, since usually they include some hypotheses and testing, as well as possible explanations for the findings. So, yes, they can be a combination, although you'll need to prioritize one of the approaches.