Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong khi co snippets" » "duong thi co snippets", "duong nhi co snippets", "dong khi co snippets", "duong khi con snippets", "duong khi cu snippets", "duong khi mo 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: (((("duong khi co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong khi co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong khi co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong khi co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.