Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra linh con snippets" » "tran dinh con snippets", "tran minh con snippets", "tran vinh con snippets", "tra linh hon snippets", "tra sinh con snippets", "tra dinh chon 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 linh con 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 linh con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra linh con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra linh con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.