Perhaps you should try some spelling variations:
"variable diffusion non coding programming" » "variable diffusivity non coding programming" (Expand search), "variable diffusion non solving programming" (Expand search), "variable diffusion non cone programming" (Expand search), "variable diffusion non conic programming" (Expand search), "variable diffusion not coding programming" (Expand search), "variable diffusion xenon coding programming" (Expand search), "variable diffusion norm coding programming" (Expand search)
"advanced python python coding programming" » "advanced python python solving programming" (Expand search), "advanced python python cone programming" (Expand search), "advanced python python conic programming" (Expand search), "advanced method python coding programming" (Expand search), "advanced path python coding programming" (Expand search), "advanced symphony python coding programming" (Expand search), "advanced pythons python coding programming" (Expand search), "advanced piton python coding programming" (Expand search), "advanced pitons python coding programming" (Expand search), "advanced python action coding programming" (Expand search), "advanced python python code 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: (("variable diffusion non coding programming") OR ("advanced python python coding programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"variable diffusion non coding programming\") OR (\"advanced python python coding programming\"))".
• Removing quotes may allow a broader search: (( variable diffusion non coding programming ) OR ( advanced python python coding programming )).
• Adding a wildcard symbol may retrieve word variants: (("variable diffusion non coding programming") OR ("advanced python python coding programming"))*.