Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang du cho snippets" » "nang tu cho snippets", "nang luc cho snippets", "nang doc cho snippets", "nang cu cho snippets", "nang de cho snippets", "nang du chi 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: (((("nang du cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang du cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang du cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang du cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.