Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi nhap lee snippets" » "hoi dap lee snippets", "moi nhat lee snippets", "hoi nhat le snippets", "hoi han lee snippets", "hoi nhay len 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: (((("hoi nhap lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi nhap lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi nhap lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi nhap lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.