Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi lieu hoc snippets" » "doi lieu code snippets", "duoc lieu hoc snippets", "doi chieu hoc snippets", "du lieu hoc snippets", "doi lieu khoa snippets", "doi li hoc 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: (((("doi lieu hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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