Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong doanh he snippets" » "dong doanh code snippets", "dung doanh he snippets", "trong doanh he snippets", "doanh doanh he snippets", "dong doanh ha snippets", "dong doanh hieu snippets", "dong doanh thu 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: (((("dong doanh he snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong doanh he snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong doanh he snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong doanh he snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.