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