Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"cong ha logic snippets" » "cong cua logic snippets", "cong tac logic snippets", "cong bi logic snippets", "cong hoa logic snippets", "dong ha logic snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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 core snippets") or ("cong ha logic snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("cong ha logic snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( cong ha logic snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("cong ha logic snippets"))) or ("locating bug code snippets"))*.