Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi khoa doi snippets" » "hoc khoa doi snippets", "noi khoa doi snippets", "tai khoa doi snippets", "hoi hoa doi snippets", "hoi khoa hoi snippets", "hoi khoa noi 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 khoa doi 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 khoa doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi khoa doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi khoa doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.