Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua hang tom snippets" » "cua dang tom snippets", "cua nhung tom snippets", "cua thanh tom snippets", "cua phang tom snippets", "cua hang ton snippets", "cua thang tam 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 hang 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: (((("cua hang tom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua hang tom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua hang tom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.