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