Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua luoc can snippets" » "cua nuoc can snippets", "cua quoc can snippets", "cua duoc can snippets", "cua luc canh snippets", "cua hoc can snippets", "cua luoc dai 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 luoc can 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 luoc can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua luoc can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua luoc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.