Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan vi canh snippets" » "doan va canh snippets", "don vi canh snippets", "doan thi canh snippets", "doan ve canh snippets", "doan vi hanh snippets", "doan vi anh 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: (((("doan vi canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan vi canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan vi canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan vi canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.