Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java slippers" » "python using data slippers", "python using java grippers"
"hieu va dap slippery" » "lieu va dap slippery", "hieu qua dap slippery", "hieu va dao slippery", "hieu va dau slippery"

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: "((((\"hieu va dap slippery\") OR (\"python using java slippers\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( hieu va dap slippery ) OR ( python using java slippers ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hieu va dap slippery") OR ("python using java slippers"))) OR ("locating bug core snippets"))*.