Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"manh dung dat snippets" » "manh hung dat snippets", "manh tung dat snippets", "anh dung dat snippets", "manh dung va snippets", "manh dung tai snippets"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("manh dung dat snippets") or ("python using sat snippets"))) or ("locating bug core snippets"))~.
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