Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"han hoc can snippets" » "han hoc code snippets", "nhan hoc can snippets", "than hoc can snippets", "van hoc can snippets", "han hoc dan snippets", "han hoc cao snippets", "han hoc cac 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 ("han hoc can snippets"))) or ("locating bug core snippets"))~.
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