Perhaps you should try some spelling variations:
"coder coder coupling level problem" » "coder mode coupling level problem" (Expand search), "coder model coupling level problem" (Expand search), "coder core coupling level problem" (Expand search), "coder coder coupling model problem" (Expand search), "coder coder coupling legal problem" (Expand search), "coder coder coupling bilevel problems" (Expand search), "coder coder coupling real problem" (Expand search), "coder decoder coupling level problem" (Expand search), "code code coupling level problem" (Expand search), "decoder codec coupling level 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 coder coupling level problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder coupling level problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder coupling level problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder coupling level problem") OR ("api python python python programming"))*.