Perhaps you should try some spelling variations:
"coder precoder complexity nonlinear programming" » "coder precoder complexity linear programming" (Expand search), "coder precoder complex nonlinear programming" (Expand search), "coder precoder competitive nonlinear programming" (Expand search), "coder precoder comparing nonlinear programming" (Expand search), "coder precedents complexity nonlinear programming" (Expand search), "coder code complexity nonlinear programming" (Expand search), "coder receiver complexity nonlinear programming" (Expand search), "coder decoder complexity nonlinear programming" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python 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 precoder complexity nonlinear programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder complexity nonlinear programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder complexity nonlinear programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder complexity nonlinear programming") OR ("api python python python programming"))*.