Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc nhung ca snippets" » "duoc nhung ca snippets", "duc hung ca snippets", "duc phung ca snippets", "duc nhung cau snippets", "duc nhung cam snippets", "duc nhung cay 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: (((("duc nhung ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc nhung ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc nhung ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc nhung ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.