Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"den hang o2 snippets" » "den hang code snippets", "den nang o2 snippets", "den bang o2 snippets", "den hanh o2 snippets", "den hang hoa snippets", "den hang rok snippets", "den hang ton 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: (((("den hang o2 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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