Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra tao con snippets" » "tra bao con snippets", "tran tan con snippets", "tra khao con snippets", "tra cao cong snippets", "tra vao cong snippets", "tra tao 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 tao 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 tao con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra tao con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra tao con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.