Perhaps you should try some spelling variations:
"coder modeling using multi diffraction" » "coder modeling using multiple diffraction" (Expand search), "coder modeling using multi direction" (Expand search), "coder modeling using multi attraction" (Expand search), "cover modeling using multi diffraction" (Expand search), "cover modelling using multi diffraction" (Expand search), "order modeling using multi diffraction" (Expand search), "coder model using multi diffraction" (Expand search), "coder models using multi diffraction" (Expand search)
"via python python python programming" » "via pythons python python programming" (Expand search), "via piton python python programming" (Expand search), "via pitons python python programming" (Expand search), "in 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 modeling using multi diffraction") OR ("via python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder modeling using multi diffraction\") OR (\"via python python python programming\"))".
• Removing quotes may allow a broader search: (( coder modeling using multi diffraction ) OR ( via python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder modeling using multi diffraction") OR ("via python python python programming"))*.