Perhaps you should try some spelling variations:
"dung cu trinh snippets" » "dung co trinh snippets", "dung qua trinh snippets", "dung quy trinh snippets", "dung cho trinh snippets", "chung cu trinh snippets", "dung cu trinh slippers"
"dung cua code snippets" » "dung luan code snippets", "dung cho code snippets", "dung cua cong snippets", "dung cua co snippets", "dung cfd code snippets", "dung coa code snippets", "dung choa code snippets", "chung cua code snippets", "dung cua code 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung cu trinh snippets") or ("dung cua code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cu trinh snippets") OR ("dung cua code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cu trinh snippets ) or ( dung cua code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cu trinh snippets") or ("dung cua code snippets"))) or ("locating bug code snippets"))*.