Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"suc sach cap snippets" » "su sach cap snippets", "nuoc sach cap snippets", "quoc sach cap snippets", "suc sach dao snippets", "suc sach bai snippets", "suc sach xa 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: (((("suc sach cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("suc sach cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( suc sach cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("suc sach cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.