Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tu luat chon snippets" » "tu lua chon snippets", "tu luat cho snippets", "tu luat hon snippets", "tu luan chon snippets", "su luat chon snippets", "tu xuat chon 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: (((("tu luat chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu luat chon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu luat chon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu luat chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.