Perhaps you should try some spelling variations:
"coder coder learning control effect" » "coder coder learning context effect" (Expand search), "coder coder learning contexts effect" (Expand search), "coder coder learning course effect" (Expand search), "coder codes learning control effect" (Expand search), "coder modern learning control effect" (Expand search), "coder model learning control effect" (Expand search), "coder coder learning contagion effect" (Expand search), "coder coder learning control efficacy" (Expand search), "coder decoder learning control effect" (Expand search), "code code learning control effect" (Expand search), "decoder codec learning control effect" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 learning control effect") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder learning control effect\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder learning control effect ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder learning control effect") OR ("on python python python programming"))*.