Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"don quan cua snippets" » "doan quan cua snippets", "don quang cua snippets", "dan quan cua snippets", "don quan luan snippets", "don ban cua snippets", "don gian cua 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 (\"don quan cua snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( don quan cua snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("don quan cua snippets"))) OR ("locating bug code snippets"))*.