Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi dieu ke snippets" » "thi lien ke snippets", "thi hien ke snippets", "vi dieu ke snippets", "thi dieu ky snippets", "thi dieu kien snippets", "thi 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: (((("thi dieu 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: (((("thi dieu ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi dieu ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi dieu ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.