Perhaps you should try some spelling variations:
"coder coder online control problems" » "coder coder online control program" (Expand search), "coder coder line control problems" (Expand search), "coder coder nonlinear control problems" (Expand search), "coder coder online content problems" (Expand search), "coder modern online control problems" (Expand search), "coder odr online control problems" (Expand search), "coder under online control problems" (Expand search), "coder decoder online control problems" (Expand search), "code code online control problems" (Expand search), "decoder codec online control problems" (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 online control problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder online control problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder online control problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder online control problems") OR ("api python python python programming"))*.