Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han tao canh snippets" » "han tao anh snippets", "han tao can snippets", "han tao danh snippets", "nhan tao canh snippets", "han tai canh snippets", "han tap canh 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 tao canh 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 tao canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tao canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tao canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.