Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cay van son snippets" » "cac van son snippets", "cao van son snippets", "can van son snippets", "cay van dong snippets", "cay van cong snippets", "cay van sung 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: (((("cay van son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cay van son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cay van son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cay van son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.