Perhaps you should try some spelling variations:
"quan toan cong snippets" » "quan doan cong snippets", "xuan toan cong snippets", "quan hoang cong snippets", "quan tran cong snippets", "quan toan thong snippets", "quan doan cuong snippets"
"dung ung code snippets" » "dung trung code snippets", "dung quang code snippets", "dung chung code snippets", "dung ung co 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.

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