Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"cong cong code snippets" » "cong dong code snippets", "trong cong code snippets", "dung cong code snippets", "cong cong co snippets", "cong cong che snippets", "cong cong coc snippets"
"locating bug core snippets" » "locating bug 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: (((("hang java java snippets") OR ("cong cong code snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"hang java java snippets\") OR (\"cong cong code snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( hang java java snippets ) OR ( cong cong code snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang java java snippets") OR ("cong cong code snippets"))) OR ("locating bug core snippets"))*.