Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung luan so snippets" » "dung luan code snippets", "dung luat so snippets", "dung quan so snippets", "dung luan san snippets"
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data 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 luan so snippets") or ("dung using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung luan so snippets") OR ("dung using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung luan so snippets ) or ( dung using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung luan so snippets") or ("dung using java snippets"))) or ("locating bug core snippets"))*.