Perhaps you should try some spelling variations:
"coder coder programming computational model" » "coder coder programming computation model" (Expand search), "coder coder programming operational model" (Expand search), "coder coder programa computacional model" (Expand search), "coder coder programming computational modeling" (Expand search), "coder modern programming computational model" (Expand search), "coder cone programming computational model" (Expand search), "coder order programming computational model" (Expand search), "coder decoder programming computational model" (Expand search), "code code programming computational model" (Expand search), "decoder codec programming computational model" (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 programming computational model") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder programming computational model\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder programming computational model ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder programming computational model") OR ("_ python python python programming"))*.