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