Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc doanh co snippets" » "hoa doanh co snippets", "hoc danh co snippets", "hoc dan co snippets", "hoc doanh cua snippets", "hoc doanh va snippets", "hoc anh 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: (((("hoc doanh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc doanh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc doanh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc doanh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.