Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra dan dong snippets" » "tra van dong snippets", "tra dan dung snippets", "tra dao dong snippets", "tra danh dong snippets", "tre dan dong snippets", "tran dang dong 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 dong 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 dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra dan dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.