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