Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong quang che snippets" » "dong quang code snippets", "duong quang che snippets", "dang quang che snippets", "dung quang che snippets", "dong quan che snippets", "dong quang chi snippets", "dong quang chan 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 quang che 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 quang che snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong quang che snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong quang che snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.