Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam cac cao snippets" » "nam cao cao snippets", "nam sach cao snippets", "nam cac co snippets", "nam ca cao snippets", "nam bac cao 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: (((("nam cac 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: (((("nam cac cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam cac cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam cac cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.