Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi luyen de snippets" » "thi huyen de snippets", "thi xuyen de snippets", "thi tuyen de snippets", "thi chuyen de snippets", "thi luyen ky 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 luyen de 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 luyen de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi luyen de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi luyen de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.