Perhaps you should try some spelling variations:
"creating aa viet slippers" » "creating _ viet slippers", "creating _a viet slippers", "reading aa viet slippers", "creating va viet slippers", "creating ca viet slippers", "creating da viet slippers", "creating aa viet slippery", "creating aa viet grippers"
"creating a a snippets" » "creating _ a snippets", "reading a a 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 aa viet slippers") or ("creating a a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("creating aa viet slippers") OR ("creating a a snippets"))) OR ("locating bug code snippets")).
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