Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc hai cao snippets" » "hoc hai cao snippets", "do hai cao snippets", "duc hai cao snippets", "doc thai cao snippets", "doc tai cao snippets", "doc chat cao 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 hai cao 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 hai cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc hai cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc hai cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.