Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi jong won snippets" » "doi song won snippets", "doi cong won snippets", "doi ong won snippets", "doi jong oh snippets", "doi jong soo snippets", "doi jong wha 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: (((("doi jong won snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi jong won snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi jong won snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi jong won snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.