Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"tong con chim snippets" » "tong cong chim snippets", "trong con chim snippets", "tong cot chim snippets", "tong con chi snippets", "tong can chi snippets", "tong con cho 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: (((("tong con chim snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tong con chim snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tong con chim snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tong con chim snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.