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