Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhe cho hoc snippets" » "nghe cho hoc snippets", "nghe che hoc snippets", "nghe cao hoc snippets", "nhe co hoc snippets", "nhe khoa 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: (((("nhe cho 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: (((("nhe cho hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhe cho hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhe cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.