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