Perhaps you should try some spelling variations:
"coder precoder schema complex problem" » "coder precoder scheme complex problem" (Expand search), "coder precoding scheme complex problem" (Expand search), "coder precoder schema complex problems" (Expand search), "coder decoder schema complex problem" (Expand search), "coder precoder school complex problem" (Expand search), "coder precoder sistema complexo problem" (Expand search), "coder precoder chemical complex 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 schema complex problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder schema complex problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder schema complex problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder schema complex problem") OR ("api python python python programming"))*.