Perhaps you should try some spelling variations:
"dong chuan chat snippets" » "dong chuan chau snippets", "dong chuan ha snippets", "dong luan chat snippets", "dong chan chat snippets", "dong thuan chat snippets", "dong chuyen chat snippets"
"dang java java snippets" » "dang va java 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: (((("dang java java snippets") or ("dong chuan chat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang java java snippets") OR ("dong chuan chat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang java java snippets ) or ( dong chuan chat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang java java snippets") or ("dong chuan chat snippets"))) or ("locating bug code snippets"))*.