Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do tan doan snippets" » "do tran doan snippets", "do tap doan snippets", "do van doan snippets", "do tuan doan snippets", "do tang doan snippets", "doi tan doan snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("do tan doan snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( do tan doan snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("do tan doan snippets"))) or ("locating bug code snippets"))*.