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