Perhaps you should try some spelling variations:
"dung quang che snippets" » "dang quang che snippets", "luong quang che snippets", "dung luan che snippets", "dung quan che snippets", "dung quang chi snippets", "dung quang chan snippets"
"using ibm code snippets" » "using rbf code snippets", "using lbm code snippets"
"locating bug code snippets" » "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 ibm code snippets\") OR (\"dung quang che snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using ibm code snippets ) OR ( dung quang che snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using ibm code snippets") OR ("dung quang che snippets"))) OR ("locating bug code snippets"))*.