Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan trau cua snippets" » "tan tran cua snippets", "tan trao cua snippets", "tan trieu cua snippets", "tan tru cua snippets", "tan tranh cua snippets", "tan tu 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: (((("tan trau 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: (((("tan trau cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan trau cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan trau cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.