Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using real java snippets" » "using metal java snippets", "using raw java snippets"
"dan trinh java slippery" » "dan tinh java slippery", "van trinh java slippery", "hanh trinh java slippery", "dan trinh java slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using real java snippets") or ("dan trinh java slippery"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using real java snippets") OR ("dan trinh java slippery"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using real java snippets ) or ( dan trinh java slippery ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using real java snippets") or ("dan trinh java slippery"))) or ("locating bug core snippets"))*.