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