Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thau hieu do snippets" » "thu hien do snippets", "thuc hieu do snippets", "phan hieu do snippets", "thau hieu so snippets", "thau hieu bo snippets", "thau bieu do 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: (((("thau hieu 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: (((("thau hieu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thau hieu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thau hieu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.