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