Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap xung so snippets" » "dap ung so snippets", "dap nhung so snippets", "ap dung so snippets", "dap dung so snippets", "dap tuong so snippets", "dap muong so snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("dap xung so snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dap xung so snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dap xung so snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dap xung so snippets"))) or ("locating bug code snippets"))*.