Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"sung nam chan snippets" » "quang nam chan snippets", "dong nam chan snippets", "sung cam chan snippets", "sung nam cham snippets", "sung nam 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: (((("sung nam 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: (((("sung nam chan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sung nam chan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sung nam chan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.