Perhaps you should try some spelling variations:
"variable diffusion text coding programming" » "variable diffusivity text coding programming" (Expand search), "variable diffusion text solving programming" (Expand search), "variable diffusion text cone programming" (Expand search), "variable diffusion text conic programming" (Expand search), "variable diffusion texts coding programming" (Expand search), "variable diffusion test coding programming" (Expand search), "variable diffusion etest coding programming" (Expand search), "variable diffusion text encoding programming" (Expand search), "variable diffusion text reading 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"variable diffusion text coding programming\") OR (\"advanced python python coding programming\"))~".
• Removing quotes may allow a broader search: (( variable diffusion text coding programming ) OR ( advanced python python coding programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("variable diffusion text coding programming") OR ("advanced python python coding programming"))*.