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