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