Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa va ve snippets" » "khoan va ve snippets", "khoa ma ve snippets", "hoa va ve snippets", "khoa va de snippets", "khoa va le snippets", "khoa va vi 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 va ve 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 va ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa va ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa va ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.