Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc tra cau snippets" » "boc tran cau snippets", "doc than cau snippets", "doc thau cau snippets", "doc tra sau snippets", "doc ta cau snippets", "doc tra cuu 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: (((("doc tra cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc tra cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc tra cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc tra cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.