Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung lai tom snippets" » "dung tai tom snippets", "dung lam tom snippets", "dung sai tom snippets", "dung lai tam snippets", "dung lai tim 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: (((("dung lai tom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung lai tom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lai tom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lai tom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.