Perhaps you should try some spelling variations:
"vi trong cuoc snippets" » "vi trong code snippets", "vi trong cac snippets", "vai trong cuoc snippets", "voi trong cuoc snippets", "bi trong cuoc snippets"
"locating bug core snippets" » "locating bug code snippets"
"using real java snippets" » "using metal java snippets", "using raw java snippets"

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