Perhaps you should try some spelling variations:
"dung cac cong snippets" » "luong cac cong snippets", "dung cho cong snippets", "dung tai cong snippets", "dung cua cong snippets"
"dang thi code snippets" » "hoang thi code snippets", "dang khoi code snippets", "dang thi cong snippets", "dang thi hoe snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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: (((("dung cac cong snippets") or ("dang thi code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cac cong snippets") OR ("dang thi code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cac cong snippets ) or ( dang thi code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cac cong snippets") or ("dang thi code snippets"))) or ("locating bug code snippets"))*.