Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chan dan den snippets" » "chan doan den snippets", "chan dang den snippets", "nhan dan den snippets", "chan ban den snippets", "chan van den snippets", "chan dan dung 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: (((("chan dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chan dan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chan dan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chan dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.