Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cau van hoan snippets" » "cau van hoang snippets", "cau van hoa snippets", "cau van toan snippets", "chau van hoan snippets", "cuu van hoan snippets", "cac van hoan 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: (((("cau van hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cau van hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cau van hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cau van hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.