Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xac cao hong snippets" » "xac cao phong snippets", "xac cao cong snippets", "xac cao dong snippets", "xa cao hong snippets", "bac cao hong snippets", "mach cao hong 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: (((("xac cao hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xac cao hong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xac cao hong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xac cao hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.