Perhaps you should try some spelling variations:
"dung cong core snippets" » "dung trong core snippets", "dung cong co snippets", "dung cong che snippets", "dung cong coc snippets"
"dung cong cong snippets" » "dung trong cong snippets", "dung cong dong snippets", "dung dang cong 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 cong core snippets") OR ("dung cong cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cong core snippets") OR ("dung cong cong snippets"))) OR ("locating bug code snippets")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung cong core snippets\") OR (\"dung cong cong snippets\"))) or (\"locating bug code snippets\"))".
• Removing quotes may allow a broader search: (((( dung cong core snippets ) OR ( dung cong cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cong core snippets") OR ("dung cong cong snippets"))) or ("locating bug code snippets"))*.