Perhaps you should try some spelling variations:
"root computation using string theory" » "root computations using string theory" (Expand search), "root computation in string theory" (Expand search), "root composition using string theory" (Expand search), "root competition using string theory" (Expand search), "ros computation using string theory" (Expand search), "root computation using nursing theory" (Expand search), "root computation using strong theory" (Expand search), "root computation using spring theory" (Expand search), "root computation using strains theory" (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: "((\"root computation using string theory\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( root computation using string theory ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("root computation using string theory") OR ("using coding python python programming"))*.