Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"han hang cau snippets" » "han hang code snippets", "hang hang cau snippets", "han chang cau snippets", "ban hang cau snippets", "han hang dau snippets", "han hang ca snippets", "han nhung cau 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: (((("han hang cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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