Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thue thuy do snippets" » "thu thuy do snippets", "thue thu do snippets", "thue thuc do snippets", "thue thuyet do snippets", "thue thay doi snippets", "thue thuat 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: (((("thue thuy 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: (((("thue thuy do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thue thuy do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thue thuy do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.