Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"dung danh tuan snippets" » "dung doanh tuan snippets", "dung dan tuan snippets", "dung dang tuan snippets", "dung anh tuan snippets", "dung manh tuan snippets", "dung danh thanh snippets", "dung danh tuan slippers"
"locating bug code snippets" » "locating bug code slippers", "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: "((((\"dung java java snippets\") OR (\"dung danh tuan snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( dung danh tuan snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("dung danh tuan snippets"))) OR ("locating bug code snippets"))*.