Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban tat cao snippets" » "ban tai cao snippets", "ban dat cao snippets", "ban tay cao snippets", "ban tao cao snippets", "ban tat bao 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 tat cao 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 tat cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban tat cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban tat cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.