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