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"
"vi trinh java grippers" » "vi tinh java grippers", "va trinh java grippers", "viet trinh java grippers", "vi 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 ("vi trinh java grippers"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using real java snippets\") OR (\"vi trinh java grippers\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( using real java snippets ) OR ( vi trinh java grippers ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using real java snippets") OR ("vi trinh java grippers"))) OR ("locating bug core snippets"))*.