Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam canh dep snippets" » "nam danh dep snippets", "nam thanh dep snippets", "nam nganh dep snippets", "nam cach de snippets", "nam hanh de snippets", "nam cai dep 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 canh 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: (((("nam canh dep snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam canh dep snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam canh dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.