Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh can ve snippets" » "trinh han ve snippets", "trinh san ve snippets", "trinh cau ve snippets", "trinh ban ve snippets", "trinh dan ve snippets", "trinh can va 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 can ve 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 can ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh can ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh can ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.