Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"lua cau sach snippets" » "lua cao sach snippets", "lua hau sach snippets", "lua rau sach snippets", "luat cau sach snippets", "cua cau sach snippets", "quan cau sach snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("lua cau sach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lua cau sach snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( lua cau sach snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lua cau sach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.