Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dac vien tue snippets" » "dan vien tue snippets", "dac diem tue snippets", "hoc vien tue snippets", "dac dien tu snippets", "dac tien te snippets", "dac hien tu 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: (((("dac vien tue snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dac vien tue snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac vien tue snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac vien tue snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.