Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan hoat da snippets" » "toan khoa da snippets", "toan hoc da snippets", "toan ho da snippets", "toan hoat va snippets", "toan hoat doi snippets", "toan hoat van 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: (((("toan hoat da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan hoat da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan hoat da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan hoat da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.