Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua vu hoan snippets" » "qua vu hoang snippets", "qua su hoan snippets", "qua thu hoan snippets", "cua vu hoan snippets", "qua cu hoan 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: (((("qua vu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua vu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua vu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua vu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.