Perhaps you should try some spelling variations:
declarative programming » reactive programming (Expand search)
using declarative » mining declarative (Expand search), in declarative (Expand search), engine declarative (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
python using » python usando (Expand search), python coding (Expand search), action using (Expand search)
code python » pacote python (Expand search)

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

• Removing quotes may allow a broader search: (( codigo python using declarative programming ) OR ( python code python python programming ))~.