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