Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"hoa toan lua snippets" » "hoa tan lua snippets", "hop toan lua snippets", "hoa than lua snippets", "hoa toan luan snippets", "hoa toan luat snippets", "hoa toan cua snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoa toan lua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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