Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong tin doc snippets" » "dong tin code snippets", "thong tin doc snippets", "luong tin doc snippets", "dong kinh doc snippets", "dong tin hoc snippets", "dong tin don snippets", "dong trinh doc snippets"
"dung java java snippets" » "dung va java snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong tin doc 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 tin doc snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong tin doc snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tin doc snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.