Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan pham can snippets" » "san pham can snippets", "van pham can snippets", "luan phan can snippets", "lan pham van snippets", "lan pham lan snippets", "lan pham ca 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: (((("lan pham 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: (((("lan pham can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan pham can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan pham can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.