Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhin van tre snippets" » "nhan van tre snippets", "thien van tre snippets", "nhung van tre snippets", "nhin van tren snippets", "nhin van te snippets", "nhin ban tre 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: (((("nhin van tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhin van tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhin van tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhin van tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.