Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tot dan dong snippets" » "tot van dong snippets", "tot dan dung snippets", "tot dao dong snippets", "tot san dong snippets", "tot den dong snippets", "thpt dan dong 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: (((("tot dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tot dan dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tot dan dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tot dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.