Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach cua cao snippets" » "sach cua code snippets", "cach cua cao snippets", "mach cua cao snippets", "sac cua cao snippets", "sach cua cac snippets", "sach cu cao snippets", "sach cua cay 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 cua cao 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 cua cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( sach cua cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach cua cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.