Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua danh ca snippets" » "qua dan ca snippets", "luan danh ca snippets", "luat danh ca snippets", "qua doanh cua snippets", "qua danh cho 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 danh ca 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 danh ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua danh ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua danh ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.