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