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