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