Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac duan co snippets" » "nhac dan co snippets", "khau luan co snippets", "khai tuan co snippets", "khac quan co snippets", "khac xuan co snippets", "khac chuan co 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: (((("khac duan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khac duan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac duan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac duan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.