Perhaps you should try some spelling variations:
"coder precoder upper nonlinear programming" » "coder precoder upper linear programming" (Expand search), "coder precoder under nonlinear programming" (Expand search), "coder precoder support nonlinear programming" (Expand search), "coder precoder order nonlinear programming" (Expand search), "coder decoder upper 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 upper nonlinear programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder upper nonlinear programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder upper nonlinear programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder upper nonlinear programming") OR ("api python python python programming"))*.