Perhaps you should try some spelling variations:
"coder coder computer diffusion problem" » "coder coder complex diffusion problem" (Expand search), "coder coder copper diffusion problem" (Expand search), "coder coder compounds diffusion problem" (Expand search), "coder coder computer diffusion process" (Expand search), "coder model computer diffusion problem" (Expand search), "coder color computer diffusion problem" (Expand search), "coder node computer diffusion problem" (Expand search), "coder decoder computer diffusion problem" (Expand search), "code code computer diffusion problem" (Expand search), "decoder codec computer diffusion 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 coder computer diffusion problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder computer diffusion problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder computer diffusion problem") OR ("api python python python programming"))*.