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