Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets", "using java code slippers"
"tao doc hieu snippets" » "tao toc thieu snippets", "tao hoc thieu snippets", "tao hoc hien snippets", "tao duoc hieu snippets", "tao boc hieu snippets", "tao doi hieu snippets", "tao doc hieu slippers"
"locating bug code snippets" » "locating bug core 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 code snippets\") OR (\"tao doc hieu snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( tao doc hieu snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("tao doc hieu snippets"))) OR ("locating bug code snippets"))*.