Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoe thay do snippets" » "khoa than do snippets", "khoe tai do snippets", "khoa thuy do snippets", "khoe thay doi snippets", "khoe thai do snippets", "khoe thuy do 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: (((("khoe thay do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoe thay do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoe thay do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoe thay do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.