Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"cong cao cong snippets" » "cong cau cong snippets", "cong cac cong snippets", "cong co cong snippets", "cong cao dang snippets", "cong cua 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 cao 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 cao cong snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cao cong snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cao cong snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.