Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung sai hon snippets" » "dung tai hon snippets", "dung va hon snippets", "dung dat hon snippets", "dung sai gon snippets", "dung dai hong snippets", "dung gai khon 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 sai hon 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 sai hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sai hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sai hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.