Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tuan anh di snippets" » "tuan danh di snippets", "tuan xanh di snippets", "tuan anh d snippets", "quan anh di snippets", "tran anh di snippets", "luan anh di 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: (((("tuan anh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tuan anh di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuan anh di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuan anh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.