Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"quan dong code snippets" » "quang dong code snippets", "quan long code snippets", "quan hoang code snippets", "quan dong co snippets", "quan dong che snippets", "quan dong cong snippets"
"locating bug core snippets" » "locating bug code snippets"

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 ("quan dong code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("quan dong code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( quan dong code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("quan dong code snippets"))) or ("locating bug core snippets"))*.