Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bai luan he snippets" » "bai toan he snippets", "li luan he snippets", "vay luan he snippets", "bai luan che snippets", "bai quan he snippets", "bai luan ve 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: (((("bai luan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bai luan he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bai luan he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bai luan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.