Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao mu toan snippets" » "nao duc toan snippets", "nao mon toan snippets", "nao cua toan snippets", "nao me toan snippets", "nao tu 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: (((("nao mu 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: (((("nao mu toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao mu toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao mu toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.