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