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