Perhaps you should try some spelling variations:
"dong anh cua snippets" » "hong anh cua snippets", "dong thanh cua snippets", "hoang anh cua snippets", "dong manh cua snippets", "dong hanh cua snippets", "dong canh cua snippets"
"using c code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using c code snippets") OR ("dong anh cua snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( dong anh cua snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("dong anh cua snippets"))) or ("locating bug code snippets"))*.