Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"web mang hoc snippets" » "web bang hoc snippets", "ke mang hoc snippets", "web ban hoc snippets", "web nang hoc snippets", "web mang loc 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: (((("web mang hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("web mang hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( web mang hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("web mang hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.