Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"que toi cuc snippets" » "que tai cuc snippets", "quen voi cuc snippets", "quen tot cuc snippets", "que toi chuc snippets", "que thi cuc 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: (((("que toi cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("que toi cuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( que toi cuc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("que toi cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.