Perhaps you should try some spelling variations:
"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"
"trinh dung cu snippets" » "trinh dung co snippets", "trinh dung cho snippets", "trinh chung cu snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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