Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"si rang toan snippets" » "si dang toan snippets", "si trang tuan snippets", "si rang thang snippets", "si hang toan snippets", "sinh rang toan snippets", "si trong 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: (((("si rang 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: (((("si rang toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( si rang toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("si rang toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.