Perhaps you should try some spelling variations:
"vi trung tran snippets" » "vi trung tuan snippets", "vi trung thanh snippets", "vi trung tam snippets", "va trung tran snippets", "viet trung tran snippets", "vien trung tran snippets", "vi trung tran slippers"
"using java java snippets" » "using data java snippets", "using java 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: "((((\"vi trung tran snippets\") OR (\"using java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi trung tran snippets ) OR ( using java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi trung tran snippets") OR ("using java java snippets"))) OR ("locating bug code snippets"))*.