Perhaps you should try some spelling variations:
"coder precoder time selection problem" » "coder precoder time allocation problem" (Expand search), "coder precoder time selection process" (Expand search), "coder precoder time location problem" (Expand search), "coder decoder time selection problem" (Expand search), "coder precoder lime selections problem" (Expand search), "coder precoder the selection problem" (Expand search), "coder precoder site selection problem" (Expand search), "coder recovery time selection problem" (Expand search), "coder proper time selection problem" (Expand search), "coder precoded mimo selection problem" (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 time selection problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder time selection problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder time selection problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder time selection problem") OR ("api python python python programming"))*.