Perhaps you should try some spelling variations:
"duong java java snippets" » "duong va java snippets"
"dung con cac snippets" » "dung cong cac snippets", "dung von cac snippets", "dung co cac snippets", "dung chon cac 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"duong java java snippets\") OR (\"dung con cac snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( duong java java snippets ) OR ( dung con cac snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("duong java java snippets") OR ("dung con cac snippets"))) OR ("locating bug code snippets"))*.