Perhaps you should try some spelling variations:
"python using java slippers" » "python using data slippers", "python using java grippers"
"b trinh cad slippery" » "b trinh cau slippery", "b trinh cac slippery", "b trinh cam slippery", "n trinh cad slippery", "p trinh cad slippery", "co trinh cad slippery"
"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: "((((\"b trinh cad slippery\") OR (\"python using java slippers\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( b trinh cad slippery ) OR ( python using java slippers ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("b trinh cad slippery") OR ("python using java slippers"))) OR ("locating bug code snippets"))*.