Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"cong co dau slippers" » "dong co dau slippers", "cong cu dau slippers", "cong so dau slippers", "cong co dan slippers", "cong co cau slippers", "cong co dai slippers", "cong co dau 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: (((("cong co dau slippers") OR ("python using java slippery"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( cong co dau slippers ) or ( python using java slippery ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cong co dau slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.