Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap tung do snippets" » "dap ung do snippets", "dang tung do snippets", "dap nhung do snippets", "dap trung do snippets", "dap tung ho snippets", "dap dung do 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: (((("dap tung do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dap tung do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap tung do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap tung do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.