Perhaps you should try some spelling variations:
"danh viet trong snippets" » "danh viet trung snippets", "danh viet thong snippets", "danh viet huong snippets", "anh viet trong snippets", "ninh viet trong snippets", "nang viet trong snippets", "danh viet trong slippers"
"using a code snippets" » "using a core snippets", "using a code slippers"
"locating bug code snippets" » "locating bug core 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using a code snippets\") OR (\"danh viet trong snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using a code snippets ) OR ( danh viet trong snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") OR ("danh viet trong snippets"))) OR ("locating bug code snippets"))*.