Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dac tinh du snippets" » "may tinh du snippets", "va tinh du snippets", "ha tinh du snippets", "dac tinh duc snippets", "dac tinh dau snippets", "dac tich du 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: (((("dac tinh 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: (((("dac tinh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac tinh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac tinh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.