Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hai hoat snippets" » "duc hai hoa snippets", "duc khai hoan snippets", "duc nhan hoat snippets", "cuc hai hoat snippets", "duc dai hoat snippets", "duc hau hoat 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: (((("duc hai hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hai hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("duc hai hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.