Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran hoc ve snippets" » "toan hoc ve snippets", "than hoc ve snippets", "trac hoc ve snippets", "tran hoc va snippets", "tran hoc vi snippets", "tran hoc vo snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("tran hoc ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran hoc ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("tran hoc ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.