Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"luan ngu java slippers" » "luan ngon java slippers", "luan nghi java slippers", "luyen ngu java slippers", "luan ngu va slippers", "luan ngu java slippery", "luan 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 ("luan 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 ("luan ngu java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( luan ngu java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("luan ngu java slippers"))) or ("locating bug code snippets"))*.