Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung thu duc snippets" » "ung thu duc snippets", "dung phu duc snippets", "dung thi duc snippets", "dung thu tuc snippets", "dung tho duc snippets", "dung thu muc 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 thu duc snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dung thu duc snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("dung thu duc snippets"))) OR ("locating bug core snippets"))*.