Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi chat hoc snippets" » "thi cham hoc snippets", "tri chat hoc snippets", "thi chap hoc snippets", "thi chat hoa snippets", "thi chat thom snippets", "thi cho 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: (((("thi chat 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: (((("thi chat hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi chat hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi chat hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.