Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh tin le snippets" » "trinh kinh le snippets", "trinh toan le snippets", "trinh tu le snippets", "trinh tin la snippets", "trinh tien len 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: (((("trinh tin le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh tin le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tin le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tin le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.