public boolean filterBySearch(String search){
        List<Product> pp = new ArrayList<>();
        if (search.isEmpty()){
            filteredList.clear();
            filteredList.addAll(fullProductList);
        } else {
            search = search.toLowerCase();
            for (Product p : fullProductList){
                if (p.getDescription().toLowerCase().contains(search) ||
                        p.getCategory().toLowerCase().contains(search) ||
                        p.getBrand().toLowerCase().contains(search)){
                    if (!filteredList.contains(p)) {
                        filteredList.add(p);
                        notifyItemInserted(filteredList.indexOf(p));
                    }
                } else {
                    if (filteredList.contains(p)){
                        int i = filteredList.indexOf(p);
                        filteredList.remove(p);
                        notifyItemRemoved(i);
                    }
                }
            }
        }
        return (getItemCount() > 0);
    }