Perhaps you should try some spelling variations:
"using hoat van snippets" » "sinh hoat van snippets", "using sat van snippets", "using hoa van snippets", "using hat van snippets", "using hoang van snippets", "using hoat van slippers"
"hang java java snippets" » "hang va java snippets", "hang java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("using hoat van snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
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