Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"phong cai che snippets" » "phong cac che snippets", "phong tai che snippets", "phong cach che snippets", "phong cai chet 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.

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