Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong tang cua snippets" » "cong tang code snippets", "cong thang cua snippets", "cong tan cua snippets", "cong lang cua snippets", "cong mang cua snippets", "cong hang cua snippets", "cong tang luan 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: (((("cong tang cua snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong tang cua snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong tang cua snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tang cua snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.