Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java code snippets" » "using data code snippets"
"den hoc cham snippets" » "den toc cham snippets", "den hoc chat snippets", "den hoc chan snippets", "dien hoc cham snippets", "dan hoc cham snippets", "de hoc cham snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("den hoc cham snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( den hoc cham snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("den hoc cham snippets"))) or ("locating bugs code snippets"))*.