Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat quan can snippets" » "hai quan can snippets", "chat quang can snippets", "thuat quan can snippets", "hat quan cau snippets", "hat quan van snippets", "hat xuan can 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: (((("hat quan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat quan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat quan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat quan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.