Perhaps you should try some spelling variations:
"hoa lua doi grippers" » "hoa lua soft grippers", "hoa luan doi grippers", "hoa cua doi grippers", "hoa qua doi grippers", "hoa sua doi grippers", "hoa quan doi grippers"
"python using java slippers" » "python using data slippers", "python using java 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: "((((\"hoa lua doi grippers\") OR (\"python using java slippers\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( hoa lua doi grippers ) OR ( python using java slippers ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hoa lua doi grippers") OR ("python using java slippers"))) OR ("locating bug code snippets"))*.