Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan chieu ke snippets" » "van hieu ke snippets", "van chien ke snippets", "lan chinh ke snippets", "lan hieu ky snippets", "lan hieu ve snippets", "lan hieu kem 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: (((("lan chieu ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan chieu ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan chieu ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan chieu ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.