Perhaps you should try some spelling variations:
"duong dung co snippets" » "cuong dung co snippets", "dung dung co snippets", "duong dang co snippets", "duong dung cho snippets", "duong dung cong snippets", "duong dung cua snippets"
"dung cau code snippets" » "dung chau code snippets", "dung cu code snippets", "dung cac code snippets", "dung cau cong snippets", "dung cau de snippets", "dung 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: (((("duong dung co snippets") or ("dung cau code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong dung co snippets") OR ("dung cau code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong dung co snippets ) or ( dung cau code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong dung co snippets") or ("dung cau code snippets"))) or ("locating bug code snippets"))*.