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