Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang dan tra slippers" » "dang dang tra slippers", "dang van tra slippers", "dung dan tra slippers", "dang dan ta slippers", "dang dang tran slippers", "dang dan tra slippery", "dang dan tra 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: (((("dung java java snippets") or ("dang dan tra slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dang dan tra slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dang dan tra slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dang dan tra slippers"))) or ("locating bug code snippets"))*.