Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan hang ca snippets" » "dan hang code snippets", "ban hang ca snippets", "van hang ca snippets", "dat hang ca snippets", "dan hang va snippets", "dan nang cao snippets", "dan hang tai 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: (((("dan hang ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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