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