Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han tong doi snippets" » "han trong doi snippets", "han tuong doi snippets", "han vong doi snippets", "phan tong doi snippets", "nhan tong doi snippets", "hanh tong doi 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 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: (((("han tong doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tong doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tong doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.