Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trong thanh do snippets" » "truong thanh do snippets", "trung thanh do snippets", "rong thanh do snippets", "trong thanh code snippets", "trong thanh pho snippets", "trong thanh hoa snippets", "trong thanh loi 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: (((("trong thanh do snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong thanh do snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trong thanh do snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong thanh do snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.