Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach cao oc snippets" » "sach cao code snippets", "sach dao oc snippets", "sach cap oc snippets", "mach cao oc snippets", "sach cao hoc snippets", "sach cao toc snippets", "sach cao ngoc 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: (((("sach cao oc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach cao oc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( sach cao oc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach cao oc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.