Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"cong cau cong snippets" » "cong cu cong snippets", "cong chuc cong snippets", "thong cau cong snippets", "cong cac cong snippets", "cong cuu cong snippets", "cong cao cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cong cau cong snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong cau cong snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cau cong snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cau cong snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.