Perhaps you should try some spelling variations:
"tran cong code snippets" » "tran hong code snippets", "trien cong code snippets", "tran hoang code snippets", "tran cong cong snippets", "tran cong co snippets", "tran cong che snippets", "tran cong code slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: "((((\"tran cong code snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( tran cong code snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tran cong code snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.