Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong nam cuu snippets" » "dong ha cuu snippets", "dong tai cuu snippets", "dong va cuu snippets", "dong nam cua snippets", "dong nam suu snippets", "dong nam cau 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: (((("dong nam 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: (((("dong nam cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong nam cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong nam cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.