Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoa doi cao snippets" » "hoa dai cao snippets", "hoc doi cao snippets", "xoa doi cao snippets", "hoa do cao snippets", "hoa doi co snippets", "hoa doc cao 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: (((("hoa doi cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoa doi cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("hoa doi cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.