Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao ban cau snippets" » "tao ban cau snippets", "sao ban cau snippets", "lao ban cau snippets", "nao bang cau snippets", "nao ban can snippets", "nao van cau 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 ban cau 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 ban cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao ban cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao ban cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.