Perhaps you should try some spelling variations:
"dong trinh quan snippets" » "cong trinh quan snippets", "dong tinh quan snippets", "dong tranh quan snippets", "dong tinh quang snippets", "dong trinh luat snippets", "dong trinh han snippets", "dong trinh quan 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 (\"dong trinh quan snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using a code snippets ) OR ( dong trinh quan snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") OR ("dong trinh quan snippets"))) OR ("locating bug code snippets"))*.