Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho hau den snippets" » "cho nhau den snippets", "cho hai den snippets", "cho mau den snippets", "cho cau den snippets", "cho thau dien snippets", "cho thai den 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: (((("cho hau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho hau den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho hau den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho hau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.