For each individual edited clip (not the combined one), this is easy. Double-click a clip and it opens by itself in the Source monitor panel, so when you choose File > Export > Media it exports just that clip.
For the two clips you need to export together, you can do one of the following:
- Set sequence in/out points as Philip suggested, choose File > Export > Media, and make sure to choose Sequence In/Out from the menu under the export preview.
- Select the two clips in the sequence, choose Clip > Nest to put them in their own nested sequence, double-click the nested sequence to open them up in their own timeline with just those two clips, and choose File > Export > Media.