Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"hoang san ky snippets" » "hoang van ky snippets", "hoang son ky snippets", "hoang xuan ky snippets", "hoang sang ky snippets", "hoang dan ky snippets", "hoang san ky slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 ("hoang san ky snippets"))) or ("locating bug code snippets"))~.
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