Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don tuc hon snippets" » "do tuc hon snippets", "don thuoc hon snippets", "dong luc hon snippets", "don tu hon snippets", "don tuc huong snippets", "don tuc phong 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 tuc hon 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 tuc hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don tuc hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don tuc hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.