Perhaps you should try some spelling variations:
"dung cao thi snippets" » "duong cao thi snippets", "dung cho thi snippets", "dung co thi snippets", "dung cau thi snippets", "dung cao tai snippets", "dung dao thi snippets", "dung cao thi 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 (\"dung cao thi snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using a code snippets ) OR ( dung cao thi snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") OR ("dung cao thi snippets"))) OR ("locating bug code snippets"))*.