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