Perhaps you should try some spelling variations:
"coder coding refractive index programming" » "coder varying refractive index programming" (Expand search), "coder on refractive index programming" (Expand search), "coder in refractive index programming" (Expand search), "coder coding refractive convex programming" (Expand search), "coder coding refractive and programming" (Expand search), "coder coding refractive end programming" (Expand search), "modern coding refractive index programming" (Expand search), "color coding refractive index programming" (Expand search), "odor coding refractive index programming" (Expand search)
"python coding python python programming" » "python codigo python python programming" (Expand search), "action coding python python programming" (Expand search), "python code python python programming" (Expand search), "python codigos python python programming" (Expand search), "python using python python programming" (Expand search), "python coding pythons python programming" (Expand search), "python coding piton python programming" (Expand search), "python coding pitons 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 coding refractive index programming") OR ("python coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding refractive index programming\") OR (\"python coding python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding refractive index programming ) OR ( python coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding refractive index programming") OR ("python coding python python programming"))*.