Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cao dan cach snippets" » "cao dan code snippets", "cao dan cac snippets", "cao dan canh snippets", "cao nhan cach snippets", "cao dang cach snippets", "cao danh cach snippets", "cac dan cach 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: (((("cao dan cach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao dan cach snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cao dan cach snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao dan cach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.