Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong nhan ca snippets" » "cong nhan code snippets", "cong nhat ca snippets", "cong thanh ca snippets", "cong san ca snippets", "cong nhan cua snippets", "cong nhan va snippets", "cong nhap ca snippets"
"python using java snippets" » "python using data 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 nhan ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong nhan ca snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong nhan ca snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong nhan ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.