Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"hoc doi tran snippets" » "hoc doi tan snippets", "hoc doi tram snippets", "hoc doi trong snippets", "hoc dai tran snippets", "hoc noi tran snippets", "hoc moi tran 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 ("hoc doi tran snippets"))) or ("locating bug core snippets"))~.
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