Perhaps you should try some spelling variations:
"nhan sinh data slippers" » "nhan using data slippers", "nhan sinh vat slippers", "nhan dinh dat slippers", "phan sinh data slippers", "nhan sinh data slippery", "nhan sinh 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: (((("nhan sinh 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: (((("nhan sinh data slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan sinh data slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan sinh data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.