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