Perhaps you should try some spelling variations:
"dung cac he snippets" » "luong cac he snippets", "dung cho he snippets", "dung tai he snippets"
"dung ung java snippets" » "dung trung java snippets", "dung quang java snippets", "dung chung java snippets", "dung using java snippets", "dung ngu java snippets", "dung ung va 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: "((((\"dung cac he snippets\") OR (\"dung ung java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung cac he snippets ) OR ( dung ung java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung cac he snippets") OR ("dung ung java snippets"))) OR ("locating bug code snippets"))*.