Perhaps you should try some spelling variations:
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data snippets"
"duong dan den snippets" » "duong dang den snippets", "huong dan den snippets", "duong van den snippets", "duong ban den snippets", "duong dan dung snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 using java snippets") or ("duong dan den snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung using java snippets") OR ("duong dan den snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( dung using java snippets ) or ( duong dan den snippets ))) or ( locating bug code snippets ))*.