Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi cua cao snippets" » "hoi cua cao snippets", "dai cua cao snippets", "dong cua cao snippets", "doi cua cac snippets", "doi cu cao snippets", "doi cua cay 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 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: (((("doi cua cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi cua cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi cua cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.