Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc kinh son snippets" » "hoc kinh son snippets", "luoc kinh son snippets", "toan kinh son snippets", "toc tinh son snippets", "toc minh son snippets", "toc kinh mon 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: (((("toc kinh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc kinh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc kinh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc kinh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.