Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi ngoc hoa snippets" » "thi ngoc hoa snippets", "pham ngoc hoa snippets", "phan ngoc hoa snippets", "phi hoc hoa snippets", "phi nghe hoa snippets", "phi ngoc hai 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: (((("phi ngoc hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi ngoc hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi ngoc hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi ngoc hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.