Perhaps you should try some spelling variations:
"dung trong core snippets" » "dung strong core snippets", "dung trong cong snippets", "dung trong co snippets"
"cong cong core snippets" » "cong dong core snippets", "trong cong core snippets", "dung cong core snippets", "cong cong co snippets", "cong cong che snippets", "cong cong coc 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: (((("cong cong core snippets") or ("dung trong core snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong cong core snippets") OR ("dung trong core snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cong core snippets ) or ( dung trong core snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cong core snippets") or ("dung trong core snippets"))) or ("locating bug code snippets"))*.