Perhaps you should try some spelling variations:
"hanh trinh code snippets" » "canh tranh code snippets", "hanh chinh code snippets", "hanh trinh cong snippets", "hanh trinh co snippets", "hanh trinh cad snippets", "hanh trinh code slippers"
"dung cua dan snippets" » "dung luan dan snippets", "dung cho dan snippets", "dung cua dang snippets", "dung cua ban snippets", "dung ca dan snippets", "dung cua dan 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: (((("hanh trinh code snippets") or ("dung cua dan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh trinh code snippets") OR ("dung cua dan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh trinh code snippets ) or ( dung cua dan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh trinh code snippets") or ("dung cua dan snippets"))) or ("locating bug code snippets"))*.