Perhaps you should try some spelling variations:
"hien cong code snippets" » "thien cong code snippets", "tien cong code snippets", "dien cong code snippets", "hien cong cong snippets", "hien cong co snippets", "hien cong che snippets", "hien cong 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: (((("hien cong 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: (((("hien cong code snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hien cong code snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hien cong code snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.