Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tru hoc chi snippets" » "tu hoc chi snippets", "tri hoc chi snippets", "trung hoc chi snippets", "tru hoc chia snippets", "tru hoc cho snippets", "tru hoc chu 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: (((("tru hoc chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tru hoc chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tru hoc chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tru hoc chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.