Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"manh dung du snippets" » "manh dung code snippets", "manh hung du snippets", "manh tung du snippets", "anh dung du snippets", "manh dung de snippets", "manh dung cu snippets", "manh dung cua 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: (((("manh dung du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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