Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa cay cao snippets" » "khoa cam cao snippets", "khoa can cao snippets", "khoa cap cao snippets", "khoa chay cao snippets", "khoa cay co snippets", "khoa tay cao 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: (((("khoa cay cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa cay cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa cay cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa cay cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.