Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phi toan ho snippets" » "phi toan code snippets", "chi toan ho snippets", "khi toan ho snippets", "phap toan ho snippets", "phi toan hoc snippets", "phi toan khoa snippets", "phi toan cao 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: (((("python using java snippets") or ("phi toan ho snippets"))) or ("locating bug core snippets"))~.
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