Perhaps you should try some spelling variations:
"coder coder context switching models" » "coder coder code switching models" (Expand search), "coder coder context switching costs" (Expand search), "coder border context switching models" (Expand search), "coder modern context switching models" (Expand search), "coder model context switching models" (Expand search), "coder decoder context switching models" (Expand search), "code code context switching models" (Expand search), "decoder codec context switching models" (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 context switching models") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder context switching models\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder context switching models ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder context switching models") OR ("on python python python programming"))*.