Perhaps you should try some spelling variations:
"creating va toan snippets" » "creating a toan snippets", "creating _ toan snippets", "creating van toan snippets", "creating bai toan snippets", "creating tap toan snippets"
"creating va a snippets" » "creating a a snippets", "creating _ a snippets", "creating va am snippets", "creating va da snippets", "creating va ca 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: (((("creating va toan snippets") or ("creating va a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("creating va toan snippets") OR ("creating va a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( creating va toan snippets ) or ( creating va a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("creating va toan snippets") or ("creating va a snippets"))) or ("locating bug code snippets"))*.