Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"day hoi hoc snippets" » "day hoc hoc snippets", "dai hoi hoc snippets", "dan hoi hoc snippets", "day hoa hoc snippets", "day khoa hoc snippets", "day hoi chuc 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: (((("day hoi 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: (((("day hoi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( day hoi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("day hoi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.