Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan anh hoa snippets" » "luan danh hoa snippets", "tuan anh hoa snippets", "lan anh hoa snippets", "luan anh khoa snippets", "luan hanh hoa 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 anh hoa 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 anh hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan anh hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan anh hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.