RecyclerView does not expand

Hello, this is the following, I'm using two RecyclerView in parallel:

              <android.support.v7.widget.RecyclerView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="15dp"
                android:layout_marginTop="5dp"
                android:id="@+id/produtos"
                >
            </android.support.v7.widget.RecyclerView>

            <android.support.v7.widget.RecyclerView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="15dp"
                android:layout_marginTop="5dp"
                android:id="@+id/refeicoes"
                >
            </android.support.v7.widget.RecyclerView>

I do two different searches and I put it there. The problem is that it looks like the RecyclerView product does not expand by the full. It looks like it's running on the same axis. I wanted her to expand. If you had 30 products, show the 30 and then show RecycLerView meals. can anybody help me? Thank you.