Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"ran hoc dung snippets" » "ran hoc ung snippets", "ran hoc dan snippets", "ran hoc cong snippets", "van hoc dung snippets", "dan hoc dung snippets", "toan hoc dung snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("ran hoc dung snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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