Perhaps you should try some spelling variations:
"trinh dung code snippets" » "trinh dung cong snippets", "trinh dung co snippets", "trinh dung de snippets"
"cong hung code snippets" » "cong chung code snippets", "cong huong code snippets", "cong dung code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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: (((("trinh dung code snippets") or ("cong hung code snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh dung code snippets") OR ("cong hung code snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( trinh dung code snippets ) or ( cong hung code snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh dung code snippets") or ("cong hung code snippets"))) or ("locating bug code slippers"))*.