Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi khanh ca snippets" » "thi thanh ca snippets", "thi hanh ca snippets", "thi anh ca snippets", "thi khanh hoa snippets", "thi khanh tra 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 khanh ca 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 khanh ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi khanh ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi khanh ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.