Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"nhung tri cao snippets" » "nhung bai cao snippets", "nhung bi cao snippets", "nhung gi cao snippets", "nhung tri co snippets", "nhung tai cao snippets", "nhung tri cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java core snippets") or ("nhung tri cao snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("nhung tri cao snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( nhung tri cao snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("nhung tri cao snippets"))) or ("locating bug code snippets"))*.