Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra thai cua snippets" » "tra hai cua snippets", "trang thai cua snippets", "tranh thai cua snippets", "tra than cua snippets", "tra tai cuc snippets", "tra tri cua 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 thai cua 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 thai cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra thai cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra thai cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.