Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi hang doi snippets" » "thi hang doi snippets", "phi hung doi snippets", "pham hang doi snippets", "phi hang di snippets", "phi hang loi snippets", "phi huong doi 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 hang doi 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 hang doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi hang doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi hang doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.