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