Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua luong do snippets" » "qua duong do snippets", "luan luong do snippets", "quoc luong do snippets", "qua luong dao snippets", "qua cuong do snippets", "qua luong du 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 luong do 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 luong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua luong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua luong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.