Perhaps you should try some spelling variations:
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets", "python using sat slippers"
"nha hoc sach snippets" » "nha hoc sinh snippets", "nha hoc cac snippets", "nha hoc anh snippets", "nha thuoc sach snippets", "khoa hoc sach snippets", "nha nuoc sach snippets", "nha hoc sach slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nha hoc sach snippets\") OR (\"python using sat snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( nha hoc sach snippets ) OR ( python using sat snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("nha hoc sach snippets") OR ("python using sat snippets"))) OR ("locating bug code snippets"))*.