Perhaps you should try some spelling variations:
"using vegetation in testing program" » "restinga vegetation in testing program" (Expand search), "and vegetation in testing program" (Expand search), "using vegetation in testing programs" (Expand search), "using vegetation in teaching program" (Expand search), "using vegetation in visiting program" (Expand search), "using vegetation index testing program" (Expand search), "using vegetation skin testing program" (Expand search), "using vegetation in treating program" (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: "((\"using vegetation in testing program\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( using vegetation in testing program ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using vegetation in testing program") OR ("using coding python python programming"))*.