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