Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan van mot snippets" » "tran van mot snippets", "tang van mot snippets", "luan van mot snippets", "tan han mot snippets", "tan van mo snippets", "tan gian mot 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 mot 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 mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan van mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan van mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.