Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung thi tu snippets" » "dung tai tu snippets", "dung tri tu snippets", "dung chi tu snippets", "dung thi thu snippets", "dung thi cu snippets", "dung thi thuy snippets"
"locating bug core snippets" » "locating bug 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 (\"dung thi tu snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dung thi tu snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("dung thi tu snippets"))) OR ("locating bug core snippets"))*.