Perhaps you should try some spelling variations:
their reprogramming » the reprogramming (Expand search), timing reprogramming (Expand search), cell reprogramming (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
string their » string theory (Expand search), setting their (Expand search), during their (Expand search)
code string » code sharing (Expand search), code strict (Expand search), code merging (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 string their reprogramming ) OR ( on python python python programming ))~.