Perhaps you should try some spelling variations:
"coder coder simplex method problems" » "coder coder simplex method process" (Expand search), "coder coder simple method problems" (Expand search), "coder coder simplex centroid problems" (Expand search), "coder model simplex method problems" (Expand search), "coder clones simplex method problems" (Expand search), "coder rede simplex method problems" (Expand search), "coder decoder simplex method problems" (Expand search), "code code simplex method problems" (Expand search), "decoder codec simplex method 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 simplex method problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder simplex method problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder simplex method problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder simplex method problems") OR ("on python python python programming"))*.