Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dan nam hung snippets" » "dan nam nhung snippets", "dan nam vung snippets", "dan cam hung snippets", "van nam hung snippets", "dong nam hung snippets", "dinh nam hung snippets"

Try widening your search to All Fields.

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