Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao moi cua snippets" » "nao noi cua snippets", "vao moi cua snippets", "ngay moi cua snippets", "nao hoi cua snippets", "nao doi cua snippets", "nao moi quan 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: (((("nao moi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao moi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao moi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao moi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.