Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don dan dong snippets" » "don van dong snippets", "don dan dung snippets", "don dao dong snippets", "dong dan dong snippets", "do dan dong snippets", "doi 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: (((("don 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: (((("don dan dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don dan dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.