Perhaps you should try some spelling variations:
"coder coder nirs optimization problem" » "coder coder nirs optimization problems" (Expand search), "coder coder its optimization problem" (Expand search), "coder coder grids optimization problem" (Expand search), "coder coder films optimization problem" (Expand search), "coder decoder nirs optimization problem" (Expand search), "code code nirs optimization problem" (Expand search), "decoder codec nirs optimization 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 nirs optimization problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder nirs optimization problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder nirs optimization problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder nirs optimization problem") OR ("api python python python programming"))*.