Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"truan doi cua snippets" » "truan doi code snippets", "truyen doi cua snippets", "quan doi cua snippets", "khuan doi cua snippets", "truan hoi cua snippets", "truan dai cua snippets", "truan dong cua snippets"
"dung java java snippets" » "dung va java 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: (((("dung java java snippets") or ("truan doi cua snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("truan doi cua snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( truan doi cua snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("truan doi cua snippets"))) or ("locating bug core snippets"))*.