Perhaps you should try some spelling variations:
"dan trinh vat snippets" » "dan tinh vat snippets", "van trinh vat snippets", "hanh trinh vat snippets", "dan trinh van snippets", "dan trinh luat snippets", "dan sinh vat snippets", "dan trinh vat slippers"
"using a java snippets" » "using _ java snippets", "using a java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs 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: "((((\"dan trinh vat snippets\") OR (\"using a java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dan trinh vat snippets ) OR ( using a java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dan trinh vat snippets") OR ("using a java snippets"))) OR ("locating bug code snippets"))*.