Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trang do ve snippets" » "trang o ve snippets", "tang do ve snippets", "trang de ve snippets", "trang dao ve snippets", "trang do 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: (((("trang do 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: (((("trang do ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trang do ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trang do ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.