Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dac khoi can snippets" » "cac khoi can snippets", "dac khoa can snippets", "dang khoi can snippets", "dac khoi nang snippets", "dac 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: (((("dac 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: (((("dac khoi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac khoi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac khoi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.