Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban tham hoa snippets" » "ban than hoa snippets", "van tham hoa snippets", "ban ham hoa snippets", "ban pham hoa snippets", "ban thanh hoa snippets", "ban pham khoa 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: (((("ban tham hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban tham hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("ban tham hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.