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