Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong hang cau snippets" » "cong hang code snippets", "cong thang cau snippets", "cong hung cau snippets", "cong lang cau snippets", "cong hang dau snippets", "cong hang ca snippets", "cong nhung cau 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 hang cau 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 hang cau snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong hang cau snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hang cau snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.