Perhaps you should try some spelling variations:
"teaching observation in java programming" » "teaching dissertations in java programming" (Expand search), "teaching intervention in java programming" (Expand search), "teaching formation in java programming" (Expand search), "teaching observation in and programming" (Expand search), "teaching observation in based programming" (Expand search), "teaching observation in goal programming" (Expand search), "teaching observations in java programming" (Expand search), "teaching observation and java programming" (Expand search), "teaching observation of java programming" (Expand search), "teaching observation in japan programming" (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: "((\"teaching observation in java programming\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( teaching observation in java programming ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("teaching observation in java programming") OR ("using coding python python programming"))*.