Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"o tinh core snippets" » "o tinh co snippets", "o tio2 core snippets", "hoi tinh core snippets", "hoa tinh core snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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: "((((\"o tinh core snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( o tinh core snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("o tinh core snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.