Perhaps you should try some spelling variations:
convex programming » cone programming (Expand search), computer programming (Expand search)
etching convex » etching one (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
code etching » code teaching (Expand search), code reaching (Expand search), hole etching (Expand search)
code code » code cdc (Expand search)
on python » in python (Expand search), of python (Expand search), _ python (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( code code etching convex programming ) OR ( on python python python programming )).