Perhaps you should try some spelling variations:
"dan toc cong snippets" » "dan hoc cong snippets", "dan truoc cong snippets", "dan thuoc cong snippets"
"dung vbugss code snippets" » "dung vbugss core snippets", "dung vbungss code snippets", "dung vbugsss code snippets"
"locating bug code snippets" » "locating bug core snippets", "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: (((("dan toc cong snippets") or ("dung vbugss code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan toc cong snippets") OR ("dung vbugss code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan toc cong snippets ) or ( dung vbugss code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan toc cong snippets") or ("dung vbugss code snippets"))) or ("locating bug code snippets"))*.