Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan hoat don snippets" » "van hoa don snippets", "dan hoc don snippets", "danh hoa don snippets", "dan hoat dong snippets", "dan hoat doi snippets", "dan hoa don 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: (((("dan hoat don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan hoat don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hoat don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hoat don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.