Perhaps you should try some spelling variations:
"coder precoder channel convex programming" » "coder precoder channel cone programming" (Expand search), "coder precoder channel computer programming" (Expand search), "coder record channel convex programming" (Expand search), "coder codes channel convex programming" (Expand search), "coder decoder channel convex programming" (Expand search), "coder precoder channel codes programming" (Expand search), "coder precoder channel confined programming" (Expand search), "coder precoder channel consumer 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), "rpa python python python programming" (Expand search), "manim python 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 channel convex programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder channel convex programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder channel convex programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder channel convex programming") OR ("api python python python programming"))*.