Perhaps you should try some spelling variations:
"python using code snippets" » "python using cfd snippets", "python using one snippets"
"do thu phan snippets" » "do thu nhan snippets", "do thuat phan snippets", "do than phan snippets", "do thuc phan snippets", "doi thu phan snippets", "do thuy phan snippets"
"locating bug core snippets" » "locating bug code 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 (\"do thu phan snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( python using code snippets ) OR ( do thu phan snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using code snippets") OR ("do thu phan snippets"))) OR ("locating bug core snippets"))*.