Perhaps you should try some spelling variations:
"python using code snippets" » "python using cfd snippets", "python using one snippets"
"locating bug core snippets" » "locating bug code snippets"
"tri moi da snippets" » "tri mot da snippets", "thi moi da snippets", "tri doi da snippets", "tri moi dan snippets", "tri moi la snippets", "tri moi va 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: "((((\"python using code snippets\") OR (\"tri moi da snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( python using code snippets ) OR ( tri moi da snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using code snippets") OR ("tri moi da snippets"))) OR ("locating bug core snippets"))*.