Perhaps you should try some spelling variations:
"trinh dan lieu snippets" » "trinh han lieu snippets", "trinh van lieu snippets", "trinh san lieu snippets", "trinh da lieu snippets", "trinh dan dieu snippets", "trinh dang dieu snippets", "trinh dan lieu slippers"
"luong cac code snippets" » "luong cuoc code snippets", "luong va code snippets", "luong tai code snippets", "luong cac cong snippets", "luong cac co snippets", "luong cac che snippets", "luong cac code slippers"
"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: (((("trinh dan lieu snippets") or ("luong cac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh dan lieu snippets") OR ("luong cac code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh dan lieu snippets ) or ( luong cac code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh dan lieu snippets") or ("luong cac code snippets"))) or ("locating bug code snippets"))*.