Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"do xuan do snippets" » "vo xuan do snippets", "ho xuan do snippets", "do tuan do snippets", "do xuan dao snippets", "do xuan du snippets", "do xuan ho snippets"
"locating bug code snippets" » "locating bug core 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 java code snippets\") OR (\"do xuan do snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( do xuan do snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("do xuan do snippets"))) OR ("locating bug code snippets"))*.