Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi tinh hoa snippets" » "doi trinh hoa snippets", "hoi tinh hoa snippets", "don tinh hoa snippets", "doi tinh hoc snippets", "doi 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: (((("doi 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: (((("doi tinh hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi tinh hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tinh hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.