Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"cong cu dau slippers" » "chung cu dau slippers", "cong cu dan slippers", "cong cp dau slippers", "cong cu cau slippers", "cong cu 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"cong cu dau slippers\") OR (\"python using java slippery\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( cong cu dau slippers ) OR ( python using java slippery ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cong cu dau slippers") OR ("python using java slippery"))) OR ("locating bug code snippets"))*.