Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van doanh _ slippers" » "toan doanh _ slippers", "van dong _ slippers", "van thanh _ slippers", "van doanh _ slippery", "van doanh _ grippers"
"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 ("van doanh _ slippers"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van doanh _ slippers ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van doanh _ slippers"))) or ("locating bug code snippets"))*.