Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han tong du snippets" » "han tang du snippets", "han ton du snippets", "han mong du snippets", "phan tong du snippets", "nhan tong du snippets", "hanh tong du 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: (((("han tong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han tong du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tong du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.