Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan van bo snippets" » "tran van bo snippets", "tang van bo snippets", "luan van bo snippets", "tan van bao snippets", "tan van bon snippets", "tan can bo 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: (((("tan van bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan van bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan van bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan van bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.