Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam len doan snippets" » "dam le doan snippets", "dam lien doanh snippets", "dam long doan snippets", "dam lan doan snippets", "dau len doan snippets", "dam tien doan 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: (((("dam len doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam len doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam len doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam len doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.