Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trang cho core snippets" » "trong cho core snippets", "trang o core snippets", "sang cho core snippets", "trang cho cong snippets", "trang cho tre snippets", "trang cho con snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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 ("trang cho core snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trang cho core snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trang cho core snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trang cho core snippets"))) or ("locating bug code snippets"))*.