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