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