Perhaps you should try some spelling variations:
"vi duong code snippets" » "vi duong co snippets", "vi duong cong snippets", "vi duong che snippets", "vi luong code snippets", "va duong code snippets", "vu duong code snippets", "vi duong code slippers"
"using data java snippets" » "using java java snippets", "using sat java snippets", "missing data java snippets", "using data java slippers"
"locating bug code 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: "((((\"vi duong code snippets\") OR (\"using data java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi duong code snippets ) OR ( using data java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi duong code snippets") OR ("using data java snippets"))) OR ("locating bug code snippets"))*.