Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi ngan do snippets" » "tai ngan do snippets", "thu ngan do snippets", "thi nga do snippets", "thi ngay do snippets", "thi nganh dao snippets", "thi nganh co 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: (((("thi ngan 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: (((("thi ngan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi ngan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi ngan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.