Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung huu chan snippets" » "duong huu chan snippets", "dang huu chan snippets", "dung hieu chan snippets", "dung huu han snippets", "dung huu chau snippets", "dung huu phan 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 huu chan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung huu chan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung huu chan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung huu chan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.