Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java can snippets" » "using java code snippets", "using data can snippets"
"doi cong cac snippets" » "doi cong code snippets", "doi song cac snippets", "noi cong cac snippets", "moi cong cac snippets", "doi cuong cac snippets", "doi cong tac snippets", "doi cong cau 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 java can snippets") OR ("doi cong cac snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using java can snippets\") OR (\"doi cong cac snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( using java can snippets ) OR ( doi cong cac snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java can snippets") OR ("doi cong cac snippets"))) OR ("locating bug core snippets"))*.