Perhaps you should try some spelling variations:
"coder coder model applied problems" » "coder coder model coupled problems" (Expand search), "coder coder model posed problems" (Expand search), "coder coder model applied project" (Expand search), "coder decoder model applied problems" (Expand search), "code code model applied problems" (Expand search), "decoder codec model applied problems" (Expand search), "coder cover model applied problems" (Expand search), "coder copper model applied problems" (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 model applied problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder model applied problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder model applied problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder model applied problems") OR ("on python python python programming"))*.