Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets"
"cau doi tinh snippets" » "cau doi trinh snippets", "cau hoi tinh snippets", "cau don tinh snippets", "cau do tinh snippets", "cau noi tinh 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: "((((\"cau doi tinh snippets\") OR (\"python using sat snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( cau doi tinh snippets ) OR ( python using sat snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cau doi tinh snippets") OR ("python using sat snippets"))) OR ("locating bug core snippets"))*.