Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra dung do snippets" » "tran dung do snippets", "trai dung do snippets", "ra dung do snippets", "tra dung doi snippets", "tra dung co snippets", "tra dung de 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 dung 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: (((("tra dung do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra dung do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra dung do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.