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