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