Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra dan mon snippets" » "tra danh mon snippets", "tre dan mon snippets", "tran dang mon snippets", "tra dap mon snippets", "tra dan dong snippets", "tra dong mon 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: (((("tra dan mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra dan mon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra dan mon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra dan mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.