Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham so cau snippets" » "phap so cau snippets", "ham so cau snippets", "pham mo cau snippets", "pham so cap snippets", "pham bo cau snippets", "pham co cau 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: (((("pham so cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham so cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham so cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham so cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.