Perhaps you should try some spelling variations:
"creating a a snippets" » "creating _ a snippets", "reading a a snippets", "creating a a slippers"
"creating trung ha snippets" » "creating trung hoc snippets", "creating trung tam snippets", "creating trung cap snippets", "creating trung ha 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 trung ha snippets") or ("creating a a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("creating trung ha snippets") OR ("creating a a snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("creating trung ha snippets") or ("creating a a snippets"))) or ("locating bug code snippets"))*.