Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu thuy chi snippets" » "thi thuy chi snippets", "thuc thuc chi snippets", "thu thuat chi snippets", "thu thu chi snippets", "thu thuy khi snippets", "thu thuy thi 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: (((("thu thuy chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu thuy chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu thuy chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu thuy chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.