Perhaps you should try some spelling variations:
"creating xuan nam snippets" » "creating a nam snippets", "creating quang nam snippets", "creating xuan nang snippets", "creating xuan nhan snippets", "creating xuan nam slippers"
"creating c a snippets" » "creating _ a snippets", "creating a a snippets", "creating c va snippets", "creating c 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 xuan nam snippets") or ("creating c a snippets"))) or ("locating bug code snippets"))~.
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