Perhaps you should try some spelling variations:
"nang trong code snippets" » "nang truong code snippets", "lang trong code snippets", "mang trong code snippets", "nang trong cong snippets", "nang trong co snippets", "nang trong che snippets", "nang trong code slippers"
"using _ java snippets" » "using _ 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: "((((\"using _ java snippets\") OR (\"nang trong code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using _ java snippets ) OR ( nang trong code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using _ java snippets") OR ("nang trong code snippets"))) OR ("locating bug code snippets"))*.