Perhaps you should try some spelling variations:
"danh cay code snippets" » "danh ca code snippets", "danh cau code snippets", "xanh cay code snippets", "danh cay co snippets", "danh cay cong snippets", "danh cay coc snippets", "danh cay code slippers"
"python using a snippets" » "python using a 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: (((("danh cay code snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh cay code snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh cay code snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cay code snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.