Perhaps you should try some spelling variations:
"trinh hoang cao snippets" » "trinh hoan cao snippets", "minh hoang cao snippets", "trinh han cao snippets", "trinh hoang bao snippets", "trinh hoang hao snippets", "trinh hoang thao snippets"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug core snippets"
"locating bug code snippets" » "locating bug core 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: "((((\"trinh hoang cao snippets\") OR (\"dung bug code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( trinh hoang cao snippets ) OR ( dung bug code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh hoang cao snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets"))*.