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