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