Perhaps you should try some spelling variations:
"toan cong code snippets" » "tran cong code snippets", "toan thong code snippets", "doan cuong code snippets", "toan cong cong snippets", "toan cong co snippets", "toan cong che snippets", "toan 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: "((((\"toan cong code snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( toan cong code snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("toan cong code snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.