Perhaps you should try some spelling variations:
"cong trong code snippets" » "cong trong cong snippets", "cong trong co snippets", "cong trong che snippets", "cong thuong code snippets", "cong trinh code snippets", "dung trong code snippets", "cong trong code slippers"
"cong dong code snippets" » "cong dong co snippets", "cong dong che snippets", "cong dong cong snippets", "cong dong code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cong dong code snippets") or ("cong trong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong dong code snippets") OR ("cong trong code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dong code snippets ) or ( cong trong code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dong code snippets") or ("cong trong code snippets"))) or ("locating bug code snippets"))*.