Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua van cau snippets" » "cua ban cau snippets", "cua dan cau snippets", "cua vat cau snippets", "cua van dau snippets", "cua van hau snippets", "cua van chat 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: (((("cua van 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: (((("cua van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.