Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra thi loan snippets" » "tra thi lan snippets", "tra thi hoan snippets", "tra thi lien snippets", "tran thi loan snippets", "ta thi loan snippets", "tra ghi loan 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 thi loan 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 thi loan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra thi loan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra thi loan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.