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