Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"han tap cau snippets" » "han tap code snippets", "han tai cau snippets", "toan tap cau snippets", "nhan tai cau snippets", "han tap cac snippets", "han tao cau snippets", "han ta 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 tap cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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