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