Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lee jian ca snippets" » "lee liang ca snippets", "lee gwan ca snippets", "lee jen ca snippets", "lee gian cua snippets", "lee gian cac snippets", "lee gian cam 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: (((("lee jian ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lee jian ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lee jian ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lee jian ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.