Perhaps you should try some spelling variations:
"trinh tren hoang snippets" » "trinh truyen hoang snippets", "trinh tuyen hoang snippets", "trinh tieng hoang snippets", "trinh tran hoang snippets", "trinh tien hoang snippets", "trinh tuan hoang snippets", "trinh tren hoang slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers", "dung bug core snippets"
"locating bug code snippets" » "locating bug code slippers", "locating bug core snippets"

Try widening your search to All Fields.

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