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", "dung using java slippers"
"dung thi trac snippets" » "dung tai trac snippets", "dung tri trac snippets", "dung chi trac snippets", "dung thi tran snippets", "dung thi tac snippets", "dung thi trang snippets", "dung thi trac 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 thi trac snippets\") OR (\"dung using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung thi trac snippets ) OR ( dung using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung thi trac snippets") OR ("dung using java snippets"))) OR ("locating bug code snippets"))*.