Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"dung trong toan snippets" » "dung truong toan snippets", "dung trong tan snippets", "dung trong hoan snippets"
"using c code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using cfd 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: (((("using c code snippets") or ("dung trong toan snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using c code snippets") OR ("dung trong toan snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( dung trong toan snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("dung trong toan snippets"))) or ("locating bugs code snippets"))*.