Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi tri hoc snippets" » "doi tai hoc snippets", "doi toi hoc snippets", "hoi tri hoc snippets", "doi triet hoc snippets", "doi tri thuc snippets", "doi thai 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 tri hoc 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 tri hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi tri hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tri hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.