Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc bat moi snippets" » "toc ba moi snippets", "thuoc bat moi snippets", "duoc bat moi snippets", "toc ban moi snippets", "toc bat loi snippets", "toc vat moi 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: (((("toc bat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc bat moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc bat moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc bat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.