Perhaps you should try some spelling variations:
"danh cao code snippets" » "doanh cao code snippets", "danh cho code snippets", "danh ca code snippets", "danh cao cong snippets", "danh cao de snippets", "danh cfd code snippets", "danh cao 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 cao 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 cao code snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh cao code snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cao code snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.