Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trong ca me snippets" » "trong cac me snippets", "trong van me snippets", "trong nha me snippets", "trong cha me snippets", "trong ba me snippets", "trong ca ve snippets"
"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 ("trong ca me snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trong ca me snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trong ca me snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trong ca me snippets"))) or ("locating bug code snippets"))*.