Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao voi cuoc snippets" » "nao doi cuoc snippets", "nao voi quoc snippets", "nao va cuoc snippets", "dao voi cuoc snippets", "nao noi cuoc snippets", "tao voi cuoc 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 voi cuoc 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 voi cuoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao voi cuoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao voi cuoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.