Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoat doi cao snippets" » "hoa doi cao snippets", "hat doi cao snippets", "hoat dong cao snippets", "hoat do cao snippets", "hoat doi co snippets", "hoat 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: (((("hoat 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: (((("hoat 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: (((("hoat doi cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.