Perhaps you should try some spelling variations:
"using compressive using diffusion problem" » "using compression using diffusion problem" (Expand search), "in compressive using diffusion problem" (Expand search), "during compression using diffusion problem" (Expand search), "using compressive ring diffusion problem" (Expand search), "using compressive sensing diffusion problem" (Expand search), "using compressive using diffusion process" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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: "((\"using compressive using diffusion problem\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( using compressive using diffusion problem ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using compressive using diffusion problem") OR ("using coding python python programming"))*.