Perhaps you should try some spelling variations:
"using java a snippets" » "using data a snippets", "using java _ snippets", "using java can snippets"
"hai long cac snippets" » "hai phong cac snippets", "hai duong cac snippets", "hai luong cac snippets", "hai cong cac snippets", "hai dong cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 a snippets\") OR (\"hai long cac snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java a snippets ) OR ( hai long cac snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java a snippets") OR ("hai long cac snippets"))) OR ("locating bug code snippets"))*.