Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhap cho hoc snippets" » "nhat cho hoc snippets", "phap cho hoc snippets", "nham cheo hoc snippets", "nhap co hoc snippets", "nhap khoa hoc 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: (((("nhap cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhap cho hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhap cho hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhap cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.