Perhaps you should try some spelling variations:
"coder coder modeling pedagogical proposal" » "coder coder modern pedagogical proposal" (Expand search), "coder coder models pedagogical proposal" (Expand search), "coder coder polling pedagogical proposal" (Expand search), "coder coder modeling pedagogical project" (Expand search), "coder cover modeling pedagogical proposal" (Expand search), "coder cover modelling pedagogical proposal" (Expand search), "coder order modeling pedagogical proposal" (Expand search), "coder decoder modeling pedagogical proposal" (Expand search), "code code modeling pedagogical proposal" (Expand search), "decoder codec modeling pedagogical proposal" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder modeling pedagogical proposal") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder modeling pedagogical proposal\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder modeling pedagogical proposal ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder modeling pedagogical proposal") OR ("_ python python python programming"))*.