Perhaps you should try some spelling variations:
"dung thanh tu snippets" » "dong thanh tu snippets", "dang thanh tu snippets", "dung thang tu snippets", "dung hanh tu snippets", "dung nhanh tu snippets", "dung thanh tung snippets", "dung thanh tu slippers"
"dung vbug code snippets" » "dung vung code snippets", "dung vbug code slippers", "dung vbung code snippets", "dung vbugs code snippets"
"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: (((("dung thanh tu snippets") or ("dung vbug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung thanh tu snippets") OR ("dung vbug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung thanh tu snippets ) or ( dung vbug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung thanh tu snippets") or ("dung vbug code snippets"))) or ("locating bug code snippets"))*.