Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach toi du snippets" » "cach thoi du snippets", "cac toi du snippets", "cach noi du snippets", "cach toi uu snippets", "cach tri du snippets", "cach toi da 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: (((("cach toi du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cach toi du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach toi du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach toi du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.