Perhaps you should try some spelling variations:
"dang duoc chat snippets" » "dang quoc chat snippets", "dang duc chat snippets", "dong duoc chat snippets", "dang doc chat snippets", "dang duoc pham snippets", "dang hoc chat snippets"
"dung java java snippets" » "dung 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 duoc chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang duoc chat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang duoc chat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang duoc chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.