Perhaps you should try some spelling variations:
"coder coder string inverse problems" » "coder coder string inverse problem" (Expand search), "coder coder strong inverse problems" (Expand search), "coder coder string inverter problems" (Expand search), "coder coder string inverters problems" (Expand search), "coder cordel string inverse problems" (Expand search), "coder closed string inverse problems" (Expand search), "coder modelo string inverse problems" (Expand search), "coder decoder string inverse problems" (Expand search), "code code string inverse problems" (Expand search), "decoder codec string inverse 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 string inverse problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder string inverse problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder string inverse problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder string inverse problems") OR ("api python python python programming"))*.