Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hoi o snippets" » "duoc hoi o snippets", "duc hoa o snippets", "duc loi o snippets", "duc hoi co snippets", "duc hoi _ snippets", "duc hoc o 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: (((("duc hoi o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hoi o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc hoi o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hoi o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.