Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phu troi cau snippets" » "phu tho cau snippets", "phu doi cau snippets", "su troi cau snippets", "phu troi cam snippets", "phu troi cua snippets", "phu trot cay 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: (((("phu troi cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phu troi cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phu troi cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phu troi cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.