Perhaps you should try some spelling variations:
"duong dung cong snippets" » "cuong dung cong snippets", "dung dung cong snippets", "duong dang cong snippets", "duong dung trong snippets"
"trinh da code snippets" » "trinh dan code snippets", "trinh dao code snippets", "trinh do code snippets", "trinh da core snippets"
"locating bug code snippets" » "locating bug core 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 cong snippets") or ("trinh da code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong dung cong snippets") OR ("trinh da code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong dung cong snippets ) or ( trinh da code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong dung cong snippets") or ("trinh da code snippets"))) or ("locating bug code snippets"))*.