Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"vi trinh code snippets" » "vi trinh cong snippets", "vi trinh co snippets", "vi trinh cad snippets", "vi tinh code snippets", "va trinh code snippets", "viet trinh code 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 java snippets\") OR (\"vi trinh code snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using java java snippets ) OR ( vi trinh code snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") OR ("vi trinh code snippets"))) OR ("locating bug core snippets"))*.