Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using raw snippets" » "python using real snippets", "python using a snippets", "python using low snippets"
"tri thi bao snippets" » "tri tai bao snippets", "tai thi bao snippets", "thi thi bao snippets", "tri thi hao snippets", "tri thi ba snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using raw snippets") or ("tri thi bao snippets"))) or ("locating bug core snippets"))~.
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