Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi giua cac snippets" » "phi gia cac snippets", "khi gia cac snippets", "phi giua cau snippets", "phi cua cac snippets", "phi gian cac 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: (((("phi giua cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi giua cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi giua cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi giua cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.