Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhe bach cau snippets" » "thi bach cau snippets", "he bac cau snippets", "nghe bac cau snippets", "nhe bac cau snippets", "nhe bach mai snippets", "nhe sach cap 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: (((("nhe bach cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhe bach cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhe bach cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhe bach cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.