Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van hung hoa snippets" » "van hung code snippets", "van dung hoa snippets", "manh hung hoa snippets", "van duong hoa snippets", "van hang hoa snippets", "van ung hoa snippets", "van trung hoa 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: (((("van hung hoa snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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