Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chuan van so snippets" » "chuan san so snippets", "chuan va so snippets", "chuan vn so snippets", "chuan van son snippets", "chuan van soa snippets", "chuan van su 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: (((("chuan van so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chuan van so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chuan van so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chuan van so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.