Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat dang cac snippets" » "hai dang cac snippets", "hat dan cac snippets", "ha dang cac snippets", "hat dung cac snippets", "hat bang cac snippets", "hat dong 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: (((("hat dang cac 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 dang cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat dang cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat dang cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.