Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"o hoc chieu snippets" » "o hoc thieu snippets", "o ho chieu snippets", "o hoc hien snippets", "co hoc chieu snippets", "mo hoc chieu snippets", "so hoc chieu snippets"
"locating bug code snippets" » "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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("o hoc chieu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( o hoc chieu snippets ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("o hoc chieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.