Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"lam tai trac snippets" » "lam tap trac snippets", "lam thi trac snippets", "lam hai trac snippets", "lap tai trac snippets", "nam tai trac snippets", "pham tai trac snippets"

Try widening your search to All Fields.

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