Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi oc o snippets" » "khoa hoc o snippets", "khoi lon o snippets", "khoi noi o snippets", "khoi hoc o snippets", "khoi toc o snippets", "khoi oi o 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: (((("khoi oc o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi oc o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi oc o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi oc o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.