Perhaps you should try some spelling variations:
"khoe using data slippers" » "khoe sinh data slippers", "khoe using java slippers", "khoe using sat slippers", "khoe missing data slippers", "khoe using data slippery", "khoe using data grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("khoe using data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoe using data slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("khoe using data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.