Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan ung ca snippets" » "luan hung ca snippets", "luon ung ca snippets", "luan chung ca snippets", "luan ung cua snippets", "luan cung ca 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: (((("luan ung 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: (((("luan ung ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan ung ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan ung ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.