Perhaps you should try some spelling variations:
"coder code sparse coding problem" » "coder code sparse coding problems" (Expand search), "coder code sparse coping problem" (Expand search), "coder code sparse loading problem" (Expand search), "coder novel sparse coding problem" (Expand search), "coder under sparse coding problem" (Expand search), "code code sparse coding problem" (Expand search), "modern code sparse coding problem" (Expand search), "color code sparse coding 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)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder code sparse coding problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder code sparse coding problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder code sparse coding problem") OR ("api python python python programming"))*.