Perhaps you should try some spelling variations:
"creating co duong snippets" » "creating _ duong snippets", "creating con duong snippets", "creating co xuong snippets", "creating co dong snippets", "creating co duong slippers"
"creating a a snippets" » "creating _ a snippets", "reading a a snippets", "creating a a 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: (((("creating co duong snippets") or ("creating a a snippets"))) or ("locating bug code snippets"))~.
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