Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"jan cho hoc snippets" » "san cho hoc snippets", "van cho hoc snippets", "han cho hoc snippets", "jan co hoc snippets", "jan 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: (((("jan 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: (((("jan cho hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( jan cho hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("jan cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.