Perhaps you should try some spelling variations:
"dung dan trinh snippets" » "dung dan tinh snippets", "dung van trinh snippets", "dung hanh trinh snippets", "dung dat trinh snippets", "dung san trinh snippets", "tung dan trinh snippets"
"dung mat co snippets" » "duong mat co snippets", "dung dat co snippets", "dung may co snippets", "dung vat co snippets", "dung mot co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung mat co snippets") or ("dung dan trinh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung mat co snippets") OR ("dung dan trinh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung mat co snippets ) or ( dung dan trinh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung mat co snippets") or ("dung dan trinh snippets"))) or ("locating bug code snippets"))*.