Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"viet cua cau snippets" » "viet cua code snippets", "viec cua cau snippets", "viet ca cau snippets", "viet qua cau snippets", "viet chua cau snippets", "viet cua cac snippets", "viet cua chu 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: (((("viet cua cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet cua cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( viet cua cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet cua cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.