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