Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban hang dep snippets" » "ngan hang dep snippets", "ban hang dien snippets", "ban hang dau snippets", "ban hoang de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("ban hang dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban hang dep snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban hang dep snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban hang dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.