Perhaps you should try some spelling variations:
"dang tran hoang snippets" » "dang quan hoang snippets", "dang tran quang snippets", "dang tranh hang snippets", "dang thanh hoang snippets", "quang tran hoang snippets", "hoang tran hoang snippets", "dang tran hoang 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"

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

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