Perhaps you should try some spelling variations:
"coder precoder group communication problem" » "coder precoder group communication problems" (Expand search), "coder precoder group communication profile" (Expand search), "coder precoder group communication program" (Expand search), "coder decoder group communication problem" (Expand search), "coder recovery group communication problem" (Expand search), "coder preordered group communication 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 group communication problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder group communication problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder group communication problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder group communication problem") OR ("api python python python programming"))*.