Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet dat da snippets" » "viec dat da snippets", "viet da da snippets", "viet dao da snippets", "viet dat dai snippets", "viet dat dau snippets", "viet dat va 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: (((("viet dat 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: (((("viet dat da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet dat da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet dat da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.