Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam cham cuu snippets" » "nang cham cuu snippets", "nam chi cuu snippets", "nam cao cuu snippets", "nam cap cuu snippets", "nam chat cua 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 cham cuu 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 cham cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam cham cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam cham cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.