Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan chon cu snippets" » "lua chon cu snippets", "luan chinh cu snippets", "luan chung cu snippets", "luan chon chu snippets", "luan cho cu snippets", "luan chon tu 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 chon cu 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 chon cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan chon cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan chon cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.