Perhaps you should try some spelling variations:
"coder coder typing nonlinear programming" » "coder coder typing linear programming" (Expand search), "coder coder mapping nonlinear programming" (Expand search), "coder coder typical nonlinear programming" (Expand search), "coder coder using nonlinear programming" (Expand search), "coder decoder typing nonlinear programming" (Expand search), "code code typing nonlinear programming" (Expand search), "decoder codec typing nonlinear programming" (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 typing nonlinear programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder typing nonlinear programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder typing nonlinear programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder typing nonlinear programming") OR ("on python python python programming"))*.