Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham can cau snippets" » "pham can cau snippets", "hau can cau snippets", "ham dan cau snippets", "ham van cau snippets", "ham ban cau snippets", "ham ca cau 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: (((("ham can cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ham can cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham can cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham can cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.