Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach su cao snippets" » "cach su cao snippets", "sach tu cao snippets", "sach uu cao snippets", "sach cu cao snippets", "sach vu cao snippets", "sach su co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.