Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran sau con snippets" » "tra sau con snippets", "tran chau con snippets", "trinh sau con snippets", "tran sao con snippets", "tran cau cong snippets", "tran nau cong 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: (((("tran sau con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran sau con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran sau con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran sau con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.