Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi hung cu snippets" » "phi thuong cu snippets", "thi huong cu snippets", "thi nhung cu snippets", "phi chung cu snippets", "phi hung chu snippets", "phi dung cu 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 hung cu 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 hung cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi hung cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi hung cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.