Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tap danh he snippets" » "tac danh he snippets", "tao danh he snippets", "tap dan he snippets", "tap danh het snippets", "tap hanh he 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: (((("tap danh 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: (((("tap danh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tap danh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tap danh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.