Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bui tuan do snippets" » "bui tan do snippets", "bui xuan do snippets", "bui thanh do snippets", "bui toan do snippets", "bui truan doi snippets", "bui quan doi 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: (((("bui tuan 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: (((("bui tuan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bui tuan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bui tuan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.