Perhaps you should try some spelling variations:
"lap duc hoan snippets" » "lap duc code snippets", "lap duc hoang snippets", "lap duc hoa snippets", "lap duc toan snippets", "lap du hoan snippets", "lap doc hoan snippets", "giap duc hoan snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("lap duc hoan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("lap duc hoan snippets"))) OR ("locating bug core snippets")).
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