Perhaps you should try some spelling variations:
"creating duc dung snippets" » "creating _ dung snippets", "creating duc hung snippets", "creating duc cuong snippets", "creating duc phung snippets", "creating duc dung 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 a a snippets") or ("creating duc dung snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("creating a a snippets") OR ("creating duc dung snippets"))) OR ("locating bug code snippets")).
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