Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lon khoi can snippets" » "lon khoa can snippets", "hon khoi can snippets", "long khoa can snippets", "lon khoi nang snippets", "lon hoc can 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: (((("lon khoi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lon khoi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lon khoi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lon khoi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.