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