Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java core snippets" » "using data core snippets"
"dung luat hap snippets" » "dung luan hap snippets", "dung quat hap snippets", "dung cua hap snippets", "dung luat phap snippets", "dung luat hop snippets", "dung luat tap snippets"

Try widening your search to All Fields.

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