Perhaps you should try some spelling variations:
"dung chung co snippets" » "dung cong co snippets", "dung trung co snippets", "truong chung co snippets", "dung chung cho snippets", "dung chung cu snippets", "dung chong co snippets"
"nhung cau code snippets" » "chung cu code snippets", "nhung bai code snippets", "nhu cau code snippets", "nhung cau cong snippets", "nhung cau de snippets", "nhung cfd code snippets"
"locating bug code snippets" » "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 chung co snippets") or ("nhung cau code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung chung co snippets") OR ("nhung cau code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung chung co snippets ) or ( nhung cau code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung chung co snippets") or ("nhung cau code snippets"))) or ("locating bug code snippets"))*.