Perhaps you should try some spelling variations:
"hoang san toc snippets" » "hoang van toc snippets", "hoang son toc snippets", "hoang xuan toc snippets", "hoang dan toc snippets", "hoang sang tac snippets", "hoang san thuc snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoang san toc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
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