Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van phuc ca snippets" » "van phuoc ca snippets", "van phu ca snippets", "van khuc ca snippets", "van phuc cam snippets", "van phuc cua snippets", "van phuc cac 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: (((("van phuc 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: (((("van phuc ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van phuc ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van phuc ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.