Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang van hoi snippets" » "dang van hoi snippets", "hoang van hoi snippets", "trong van hoi snippets", "tang van choi snippets", "tang van hoai snippets", "tang van khoi 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: (((("python using java snippets") or ("tang van hoi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tang van hoi snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tang van hoi snippets"))) or ("locating bug code snippets"))*.