Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"rai tang cua snippets" » "bai tang cua snippets", "rai hang cua snippets", "dai thang cua snippets", "rai mang cua snippets", "rai tang luan 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: (((("rai tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("rai tang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( rai tang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("rai tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.