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